var arrDepAirportGroups = new Array
( 
	[152,'London'],
	[154,'North'],
	[153,'Midlands'],
	[155,'Scotland'],
	[156,'West'],
	[151,'Ireland']
);

var arrDepAirports = new Array
( 
	[4451,'London (all)',152],
	[101,'Gatwick',152],
	[108,'Luton',152],
	[178,'Stansted',152],
	[102,'Heathrow',152],
	[113,'Manchester',154],
	[132,'Newcastle',154],
	[95,'Leeds/Bradford',154],
	[123,'Durham Tees Valley',154],
	[79,'Humberside',154],
	[106,'Liverpool',154],
	[29,'Blackpool',154],
	[23,'Birmingham',153],
	[56,'East Midlands',153],
	[133,'Norwich',153],
	[286,'Doncaster',153],
	[65,'Glasgow',155],
	[54,'Edinburgh',155],
	[1,'Aberdeen',155],
	[145,'Prestwick',155],
	[44,'Cardiff',156],
	[34,'Bristol',156],
	[57,'Exeter',156],
	[31,'Bournemouth',156],
	[174,'Southampton',156],
	[18,'Belfast',151]
);

var arrDestAirportGroups = new Array
(
);

var arrDestAirports = new Array
(
);


			var cfgAirportsMatrixMaxBits = 31;
			var cfgMaxChildren = 7;
			var cfgMaxRooms = 8;
			var required_fields = new Array('airportcombinedfromid','airportgrouptoid','airporttoid');
			
			Array.prototype.contains = function (el)
			{
				for (var i=0; i<this.length; i++)
					if (this[i] == el)
						return true;
				
				return false;
			}
			
			// Build keyed version of airports and groups, for easier lookups
			
			var objDepAirports = {};
			var objDestAirports = {};
			var objDestAirportsByGroup = {};
			var objDestGroups = {};
			
			var matchedGroups = new Array();
			
			for (var a=0; a<arrDepAirports.length; a++)
			{
				objDepAirports[arrDepAirports[a][0]] = {};
				objDepAirports[arrDepAirports[a][0]].airportId = arrDepAirports[a][0];
				objDepAirports[arrDepAirports[a][0]].name = arrDepAirports[a][1];
				objDepAirports[arrDepAirports[a][0]].groupId = arrDepAirports[a][2];
			}
			
			for (var a=0; a<arrDestAirports.length; a++)
			{
				objDestAirports[arrDestAirports[a][0]] = {};
				objDestAirports[arrDestAirports[a][0]].airportId = arrDestAirports[a][0];
				objDestAirports[arrDestAirports[a][0]].name = arrDestAirports[a][1];
				objDestAirports[arrDestAirports[a][0]].groupId = arrDestAirports[a][2];
				
				if (!matchedGroups.contains(arrDestAirports[a][2]))
				{
					objDestAirportsByGroup[arrDestAirports[a][2]] = new Array();
					matchedGroups.push(arrDestAirports[a][2]);
				}
				
				objDestAirportsByGroup[arrDestAirports[a][2]].push(arrDestAirports[a][0]);
			}
			
			for (var a=0; a<arrDestAirportGroups.length; a++)
			{
				objDestGroups[arrDestAirportGroups[a][0]] = {};
				objDestGroups[arrDestAirportGroups[a][0]].groupId = arrDestAirportGroups[a][0];
				objDestGroups[arrDestAirportGroups[a][0]].name = arrDestAirportGroups[a][1];
			}
			
	/* Generic Search Form Functions */
	
	// Avoid risk of corrupting UTF-8 in source file
	var laquo = '\u00ab';
	var raquo = '\u00bb';
	
	function create_xml_http_request()
	{
		if (window.XMLHttpRequest)
		{
			// If IE7, Mozilla, Safari, etc: Use native object
			return new XMLHttpRequest()
	
		}
		else if (window.ActiveXObject)
		{
			// Microsoft recommended fallback for old IEs (5 & 6)
			// http://blogs.msdn.com/ie/archive/2006/01/23/516393.aspx
			return new ActiveXObject("Microsoft.XMLHTTP");
		}
		return false;
	}
	
	function srhfrm_filter_both_ways(parent_value, group_value, all_child_options, filter, child_dropdown, first_option, append)
	{
		var group = 1;
		var textPrefix='';
		var textSuffix='';
		var idPrefix='';
		var intOldVal=child_dropdown.value;
		var option_container = child_dropdown;
		var optgroup;
		
		// Need to detect if group or airport is selected.
		if (!append)
		{
			//child_dropdown.options.length = keep_first;
			child_dropdown.innerHTML = '';
			if (first_option)
			{
				child_dropdown[child_dropdown.length] = new Option
				(
					first_option,
					-1
				);
			}
			
		}


		// Add UK group
		new_option = new Option
		(
			'',//textPrefix + 'UK' + textSuffix,
			idPrefix + '48',
			false,
			('UK' == intOldVal)
		);
		
		// To cope with IE's poor optgroup support
		new_option.appendChild(document.createTextNode(textPrefix + 'UK' + textSuffix));
		option_container.appendChild(new_option);

		
		// look up group in arrDestAirportGroups array
//			for (var j = 0; j < all_child_options.length; j++)
//			{
//				if(all_child_options[j][0] == group_value)
//				{
//					group_index = j;
//					break;
//				}
//			}
//			
//			var bit = group_index;
//
//			// loop through departure airports			
//			for(var j = 0; j < arrDepAirports.length; j++)
//			{
//				// find filter
//				for (var i = 0; i < filter.length; i++)
//				{
//					if(arrDepAirports[j][0] == filter[i][0])
//					{
//						// Bitwise AND (don't add another &)
//						if ((1 << bit) & filter[i][group])
//						{
//							new_option = new Option
//							(
//								'',//textPrefix + arrDepAirports[j][1] + textSuffix,
//								idPrefix + arrDepAirports[j][0],
//								false,
//								(arrDepAirports[j][0] == intOldVal)
//							);
//									
//							// To cope with IE's poor optgroup support
//							new_option.appendChild(document.createTextNode(textPrefix + arrDepAirports[j][1] + textSuffix));
//							option_container.appendChild(new_option);
//						}
//					}
//				}
//			}



//			if (child_dropdown.length <= 1)
//			{
//				// Check through all the possible options
//				for (var j = 0; j < all_child_options.length; j++)
//				{
//					if (all_child_options[j][2] != current_group_id)
//					{
//						option_container = child_dropdown;
//						current_group_id = 0;
//					}
//				
//					// Bitwise AND (don't add another &)
//					if (all_child_options[j][3] && all_child_options[j][3] != '')
//					{
//						// Add the previous optgroup to the dropdown before creating a new one
//						if (optgroup && optgroup.childNodes.length > 0)
//						{
//							child_dropdown.appendChild(optgroup);
//						}
//						current_group = all_child_options[j][3];
//						current_group_id = all_child_options[j][2];
//						optgroup = document.createElement('optgroup');
//						optgroup.setAttribute('label', all_child_options[j][3]);
//						option_container = optgroup;
//						
//					}
//					else
//					{
//						if ((!group_value) || (all_child_options[j][2] == group_value))
//						{
//							new_option = new Option
//							(
//								'',//textPrefix + all_child_options[j][1] + textSuffix,
//								idPrefix + all_child_options[j][0],
//								false,
//								(all_child_options[j][0] == intOldVal)
//							);
//							// To cope with IE's poor optgroup support
//							new_option.appendChild(document.createTextNode(textPrefix + all_child_options[j][1] + textSuffix));
//							option_container.appendChild(new_option);
//						}
//					}
//				}
//			}
//			
		child_dropdown.disabled = (child_dropdown.length <= 1) ? 'disabled' : false;
	}
	
	/**
	 * @param int parent_value The value selected in the parent dropdown
	 * @param int group_value
	 * @param array all_child_options The list of potential options for the child dropdown
	 * @param array filter Bit-based array containing information about the mappings from one airport to another
	 * @param HTML_select_element child_dropdown The dropdown to put the new options into
	 * @param int first_option The display string of the first option in the dropdown (e.g. Any) which will have a value of -1
	 * @param boolean append If true, add additional options without deleting any existing options (keep_first will be ignored)
	 */
	function srhfrm_filter_options(parent_value, group_value, all_child_options, filter, child_dropdown, first_option, append)
	{
		var matchGroup = false;
		var textPrefix='';
		var textSuffix='';
		var idPrefix='';
		var intOldVal=child_dropdown.value;
		var current_group = '';
		var current_group_id = 0;
		var option_container = child_dropdown;
		var optgroup;
		var group_found = false;
		var group_index;
		var goup = 1;
		
		/* parent_value  - airport value */
		/* group_value - null */
		
		/* all_child_options - aiport group options */
		/* filter - bit map */
		
		/* child_dropdown - select element */
		/* first_option - please select string */
		/* append - false */
				
		
		// Need to detect if group or airport is selected.
		if (!append)
		{
			//child_dropdown.options.length = keep_first;
			child_dropdown.innerHTML = '';
			
			if (first_option == laquo+' Any '+raquo)
			{
				child_dropdown[child_dropdown.length] = new Option
				(
					first_option,
					'Any'
				);
			}
			else if (first_option)
			{
				child_dropdown[child_dropdown.length] = new Option
				(
					first_option,
					-1
				);
			}
		}
		
		if(filter.length == 0)
		{
			group_found = true;
		}
		
		for (var i = 0; i < filter.length; i++)
		{
			// Check through the filter array to find the values to filter on.
			if (filter[i][0] == parent_value)
			{
				var strTest = '';
				var bit = 0;
				var group = 1;
				group_found = true;
				// Check through all the possible options
				for (var j = 0; j < all_child_options.length; j++)
				{
					if (all_child_options[j][2] != current_group_id)
					{
						option_container = child_dropdown;
						current_group_id = 0;
					}

					if (all_child_options[j].length == 4 && all_child_options[j][3] != '')
					{
						// Add the previous optgroup to the dropdown before creating a new one
						if (optgroup && optgroup.childNodes.length > 0)
						{
							child_dropdown.appendChild(optgroup);
						}
						current_group = all_child_options[j][3];
						current_group_id = all_child_options[j][2];
						optgroup = document.createElement('optgroup');
						optgroup.setAttribute('label', all_child_options[j][3]);
						option_container = optgroup;
						
					}
					// Bitwise AND (don't add another &)
					else if ((1 << bit) & filter[i][group])
					{
						if ((!group_value) || (all_child_options[j][2] == group_value))
						{
							new_option = new Option
							(
								'',//textPrefix + all_child_options[j][1] + textSuffix,
								idPrefix + all_child_options[j][0],
								false,
								(all_child_options[j][0] == intOldVal)
							);
							// To cope with IE's poor optgroup support
							new_option.appendChild(document.createTextNode(textPrefix + all_child_options[j][1] + textSuffix));
							option_container.appendChild(new_option);
//								This is for combined destination airports
//								if ( mixAirports )
//								{
//									// append airports underneath this group
//									alert('Run filter airports again');
//									//filterAirports(child_dropdown, 'dep_airports_combined_groups', 0, all_child_options[j][0], resortid_dropdownid);
//								}
						}
					}
					
					bit++;
					if (bit == cfgAirportsMatrixMaxBits)
					{
						bit = 0;
						group++;
					}
				}
				
				// Add the last remaining optgroup to the dropdown
				if (optgroup && optgroup.childNodes.length > 0)
				{
					child_dropdown.appendChild(optgroup);
				}
			}
		}
		// ****************************************************************
		// ***** departure outside the UK *********************************
		// ****************************************************************
		if(!group_found && !group_value)
		{
			// Add UK group
			new_option = new Option
			(
				'',//textPrefix + 'UK' + textSuffix,
				idPrefix + '48',
				false,
				('UK' == intOldVal)
				);
		
			// To cope with IE's poor optgroup support
			new_option.appendChild(document.createTextNode(textPrefix + 'UK' + textSuffix));
			option_container.appendChild(new_option);
		}			
		
		else if(group_value == 48)
		{
			for (var j = 0; j < arrDestAirportGroups.length; j++)
			{
				if(arrDestAirportGroups[j][0] == 99)
				{
					group_index = j;
					break;
				}
			}

			var bit = group_index;
			
			// loop through departure airports	

			for(var j = 0; j < arrDepAirports.length; j++)
			{
				// find filter
				for (var i = 0; i < arrDepAirportsDestGroups.length; i++)
				{
					if(arrDepAirports[j][0] == arrDepAirportsDestGroups[i][0])
					{
						
						// Bitwise AND (don't add another &)
						if ((1 << bit) & arrDepAirportsDestGroups[i][1])
						{
							
							new_option = new Option
							(
								'',//textPrefix + arrDepAirports[j][1] + textSuffix,
								idPrefix + arrDepAirports[j][0],
								false,
								(arrDepAirports[j][0] == intOldVal)
							);
									
							// To cope with IE's poor optgroup support
							new_option.appendChild(document.createTextNode(textPrefix + arrDepAirports[j][1] + textSuffix));
							option_container.appendChild(new_option);
						}
					}
				}
			}
		}
		if (child_dropdown.length <= 1)
		{
			// Check through all the possible options
			for (var j = 0; j < all_child_options.length; j++)
			{
				if (all_child_options[j][2] != current_group_id)
				{
					option_container = child_dropdown;
					current_group_id = 0;
				}
			
				// Bitwise AND (don't add another &)
				if (all_child_options[j][3] && all_child_options[j][3] != '')
				{
					// Add the previous optgroup to the dropdown before creating a new one
					if (optgroup && optgroup.childNodes.length > 0)
					{
						child_dropdown.appendChild(optgroup);
					}
					current_group = all_child_options[j][3];
					current_group_id = all_child_options[j][2];
					optgroup = document.createElement('optgroup');
					optgroup.setAttribute('label', all_child_options[j][3]);
					option_container = optgroup;
					
				}
				else
				{
					if ((!group_value) || (all_child_options[j][2] == group_value))
					{
						new_option = new Option
						(
							'',//textPrefix + all_child_options[j][1] + textSuffix,
							idPrefix + all_child_options[j][0],
							false,
							(all_child_options[j][0] == intOldVal)
						);
						// To cope with IE's poor optgroup support
						new_option.appendChild(document.createTextNode(textPrefix + all_child_options[j][1] + textSuffix));
						option_container.appendChild(new_option);
					}
				}
			}
		}
		
		child_dropdown.disabled = (child_dropdown.length <= 1) ? 'disabled' : false;
	}
	
	function srhfrm_update_destination_airport_groups(srhfrm)
	{
		if(srhfrm['resort_dd[1]'])
		{
			srhfrm_update_resort_dd(srhfrm, 1);
		}
		else
		{
			srhfrm_fill_dropdown('srhfrm_destination_airport', new Array({'value': '', 'display': laquo+' Please Select '+raquo}), 0);
			srhfrm_fill_dropdown('srhfrm_resort', new Array({'value': '', 'display': laquo+' Any '+raquo}), 0);
			srhfrm_fill_dropdown('srhfrm_accomm', new Array({'value': '', 'display': laquo+' Any '+raquo}), 0);
			departure_airport = -1;
			departure_airport_group = -1;	
			onewayrow = document.getElementById('onewaydepartures');
			
			if ( srhfrm.onewayairportfromid && onewayrow.style.display != 'none')
			{
				departure_airport_combined = srhfrm.onewayairportfromid.value;
				
				if ( departure_airport_combined.substring(0, 1) == "|" )
				{
					departure_airport = departure_airport_combined.substring(1);
					departure_airport_group = -1;
				}
			}			
			else if ( srhfrm.airportcombinedfromid )
			{
				departure_airport_combined = srhfrm.airportcombinedfromid.value;
				if ( departure_airport_combined.substring(0, 1) == "|" )
				{
					departure_airport = departure_airport_combined.substring(1);
					departure_airport_group = -1;
				}
				else
				{
					departure_airport = -1;
					departure_airport_group = departure_airport_combined;
				}
			}
			else
			{
				departure_airport = srhfrm.airportfromid.value;
				departure_airport_group = srhfrm.airportgroupfromid.value;
			}
			
			if (departure_airport == -1 && departure_airport_group == -1)
			{		
				srhfrm_fill_dropdown('srhfrm_destination_airport_group', new Array({'value': '', 'display': laquo+' Please Select '+raquo}), 0);
			}
			else if(departure_airport != -1)
			{
				if (srhfrm.airportgrouptoid)
				{
					srhfrm_filter_options(
						departure_airport,
						null,
						arrDestAirportGroups,
						arrDepAirportsDestGroups,
						srhfrm.airportgrouptoid, 
						laquo+' Please Select '+raquo,
						false
					);
					
					// If there is only one option, choose it
					if (srhfrm.airportgrouptoid.length == 2 && (srhfrm.airportgrouptoid.options[0].value == -1 || srhfrm.airportgrouptoid.options[0].value == ''))
					{
						srhfrm.airportgrouptoid.selectedIndex = 1;
					}

					// Repopulate if the option is in the list.
					else if (srhfrm.repop_srhfrm_destination_airport_group && srhfrm.repop_srhfrm_destination_airport_group.value) 
					{
						srhfrm.airportgrouptoid.value = srhfrm.repop_srhfrm_destination_airport_group.value;
					}
					if (srhfrm.airportgrouptoid.value && srhfrm.airportgrouptoid.value != -1)
					{
						srhfrm_update_destination_airports(srhfrm);
					}
				}
				else if (document.getElementById('srhfrm_destination_airport_combined'))
				{
					var destination_airport_select = document.getElementById('srhfrm_destination_airport_combined');
					var current_selected = destination_airport_select.value.substring(1);
					
					var current_destination_airport;
					var current_destination_airport_group;
					
					// Keyed on group id, each element is an array of airport ids
					var matching_destination_airports = {};
					var matched_groups = new Array();
					
					// If any destination mappings exist...
					if (arrDepAirportsDestAirports[departure_airport])
					{
						// iterate over them...
						for (var current_destination_airport_id in arrDepAirportsDestAirports[departure_airport])
						{
							current_destination_airport = objDestAirports[current_destination_airport_id];
							
							if (!current_destination_airport)
							{
								continue;
							}
							
							if (document.getElementById('srhfrm_show_only_direct').checked
							    && !arrDepAirportsDestAirports[departure_airport][current_destination_airport_id].contains('Direct'))
							{
								continue;
							}
							
							if (!matched_groups.contains(current_destination_airport.groupId))
							{
								matching_destination_airports[current_destination_airport.groupId] = new Array();
								matched_groups.push(current_destination_airport.groupId);
							}
							
							matching_destination_airports[current_destination_airport.groupId].push(current_destination_airport.airportId)
						}
					}
					
					destination_airport_select.innerHTML = '';
					
					// Wow, there really isn't a count method for object keys...
					var airport_count = 0;
					
					for (var ii in matching_destination_airports)
					{
						airport_count++;
					}
					
					if (airport_count == 0)
					{
						if (document.getElementById('flight_type_one_way').checked)
						{
							for (var groupId in objDestAirportsByGroup)
							{
								var dest_optgroup = document.createElement("optgroup")
								dest_optgroup.label = objDestGroups[groupId].name;
								
								for (var j=0; j<objDestAirportsByGroup[groupId].length; j++)
								{
									var new_option = new Option(
										objDestAirports[objDestAirportsByGroup[groupId][j]].name,
										"|" + objDestAirports[objDestAirportsByGroup[groupId][j]].airportId
									);
								
									new_option.innerText =
											objDestAirports[objDestAirportsByGroup[groupId][j]].name;
									
									dest_optgroup.appendChild(new_option);
								}
								
								destination_airport_select.appendChild(dest_optgroup);
							}
						}
						
						else
						{
							var new_option = new Option(
								'No current availability',
								'Any'
							);
							
							new_option.innerText = 'No current availability';
							
							destination_airport_select.appendChild(new_option);
							
							destination_airport_select.disabled = 'disabled';
						}
					}
					
					else
					{
						var new_option = new Option(
							'Please Select',
							'Any'
						);
						
						new_option.innerText = 'Please Select';
						
						destination_airport_select.appendChild(new_option);
						
						for (var dest_group_id in matching_destination_airports)
						{
							var dest_optgroup = document.createElement("optgroup")
							dest_optgroup.label = objDestGroups[dest_group_id].name;
							
							for (var j=0; j<matching_destination_airports[dest_group_id].length; j++)
							{
								var new_option = new Option(
									objDestAirports[matching_destination_airports[dest_group_id][j]].name,
									"|" + objDestAirports[matching_destination_airports[dest_group_id][j]].airportId,
									current_selected == objDestAirports[matching_destination_airports[dest_group_id][j]].airportId,
									current_selected == objDestAirports[matching_destination_airports[dest_group_id][j]].airportId
								);
							
								new_option.innerText =
										objDestAirports[matching_destination_airports[dest_group_id][j]].name;
								
								dest_optgroup.appendChild(new_option);
							}
							
							destination_airport_select.appendChild(dest_optgroup);
						}
						
						destination_airport_select.disabled = false;
						
						srhfrm_update_resorts(srhfrm);
					}
				}
			}
			else // have departure_airport_group ID
			{
				if (srhfrm.airportgrouptoid)
				{
					srhfrm_filter_options(
						departure_airport_group,
						null,
						arrDestAirportGroups,
						arrDepGroupsDestGroups,
						srhfrm.airportgrouptoid, 
						laquo+' Please Select '+raquo,
						false
					);
					
					// Repopulate if the option is in the list.
					if (srhfrm.repop_srhfrm_destination_airport_group && srhfrm.repop_srhfrm_destination_airport_group.value) 
					{
						srhfrm.airportgrouptoid.value = srhfrm.repop_srhfrm_destination_airport_group.value;
					}
					if (srhfrm.airportgrouptoid.value && srhfrm.airportgrouptoid.value != -1)
					{
						srhfrm_update_destination_airports(srhfrm);
					}
				}
//				else if (document.getElementById('srhfrm_destination_airport_combined'))
//				{
//					alert('Update combined destination airport dropdown');
//				}
			}
		}
		srhfrm_append_subsites();
		srhfrm_highlight_required(srhfrm);
		srhfrm_save_values(srhfrm);
	}
	
	function srhfrm_append_subsites()
	{
		if (document.forms && document.forms.srhfrm && document.forms.srhfrm.airportgrouptoid)
		{
			// //// If we include the subsites in the destination drop down - or other stuff declared in optionSubsites array
			if(typeof(optionSubsites)!= 'undefined' && optionSubsites.length > 0)
			{	
				var subsites_optgroup = document.createElement('optgroup');
				subsites_optgroup.setAttribute('label', optionSubsitesTitle);
							
				// Add extra options
				for (var i = 0; i < optionSubsites.length; i++)
				{
					new_option = new Option
					(
						'',
						optionSubsitesValues[i]
					);
					// To cope with IE's poor optgroup support
					new_option.appendChild(document.createTextNode(optionSubsites[i]));
					subsites_optgroup.appendChild(new_option);
				}
				
				document.getElementById('srhfrm_destination_airport_group').appendChild(subsites_optgroup);
			}
		}
	}
	
	function srhfrm_update_destination_airports(srhfrm)
	{	
		// //// Change tab - onClick event
		if((typeof(optionSubsites)!= 'undefined') && (document.getElementById('srhfrm_destination_airport_group').value.substr(0,8) == 'onchange'))
		{
			type = document.getElementById('srhfrm_destination_airport_group').value.substr(9);
			changeTab(type);
		}
		
		srhfrm_fill_dropdown('srhfrm_resort', new Array({'value': '', 'display': laquo+' Any '+raquo}), 0);
		srhfrm_fill_dropdown('srhfrm_accomm', new Array({'value': '', 'display': laquo+' Any '+raquo}), 0);
		if (document.getElementById('srhfrm_departure_airport_combined'))
		{
			departure_airport = document.getElementById('srhfrm_departure_airport_combined').value;
			if(departure_airport.substring(0, 1) == "|")
			{
				departure_airport = departure_airport.substring(1);
			}
		}
		else
		{
			departure_airport = -1;
		}
		
		if(srhfrm.airportgrouptoid.value == 'Any')
		{
			srhfrm_fill_dropdown('srhfrm_destination_airport', new Array({'value': 'Any', 'display': laquo+' Any '+raquo}), 0);
		}
		
		else if (srhfrm.airporttoid && srhfrm.airportgrouptoid.value)
		{
			srhfrm_filter_options(
				departure_airport,
				srhfrm.airportgrouptoid.value,
				arrDestAirports,
				arrDepAirportsDestAirports,
				srhfrm.airporttoid, 
				laquo+' Please Select '+raquo,
				false
			);
				
			// If there is only one option, choose it
			if (srhfrm.airporttoid.length == 2 && (srhfrm.airporttoid.options[0].value == -1 || srhfrm.airporttoid.options[0].value == ''))
			{
				srhfrm.airporttoid.selectedIndex = 1;
			}
			// Repopulate if the option is in the list.
			else if (srhfrm.repop_srhfrm_destination_airport && srhfrm.repop_srhfrm_destination_airport.value) 
			{
				srhfrm.airporttoid.value = srhfrm.repop_srhfrm_destination_airport.value;
			}
			else
			{
				// Make sure we at least select something
				srhfrm.airporttoid.selectedIndex = 0;
			}
		}
		else if (document.getElementById('srhfrm_destination_airport_combined'))
		{
			alert('Update combined destination airport dropdown');
		}
		srhfrm_update_resorts(srhfrm);
		srhfrm_highlight_required(srhfrm);
		srhfrm_save_values(srhfrm);
	}
	
	function srhfrm_update_departure_airports(srhfrm)
	{
		var textPrefix='';
		var textSuffix='';
		
		if ( srhfrm.airportfromid )
		{
			srhfrm.airportfromid.length = 1;
			for (var i = 0; i < arrDepAirports.length; i++)
			{
				if (arrDepAirports[i][2] == srhfrm.airportgroupfromid.value)
		{
					srhfrm.airportfromid.appendChild(new Option
					(
						textPrefix + arrDepAirports[i][1] + textSuffix,
						arrDepAirports[i][0],
						false
					));
				}
			}
			srhfrm.airportfromid.disabled = srhfrm.airportfromid.length > 1 ? false : true;
		}
		srhfrm_save_values(srhfrm);
	}
	
	function srhfrm_update_departure_airports(srhfrm)
	{
		var textPrefix='';
		var textSuffix='';
		
		if ( srhfrm.airportfromid )
		{
			srhfrm.airportfromid.length = 1;
			for (var i = 0; i < arrDepAirports.length; i++)
			{
				if (arrDepAirports[i][2] == srhfrm.airportgroupfromid.value)
		{
					new_option = new Option
					(
						'',
						arrDepAirports[i][0],
						false
					);
					// To cope with IE's poor optgroup support
					new_option.appendChild(document.createTextNode(textPrefix + arrDepAirports[i][1] + textSuffix));
					srhfrm.airportfromid.appendChild(new_option);
				}
			}
			srhfrm.airportfromid.disabled = srhfrm.airportfromid.length > 1 ? false : true;
		}
		srhfrm_save_values(srhfrm);
	}
	
	function srhfrm_update_resort_dd(srhfrm, level_num, old_values, old_accomm)
	{
		var resort_dd_element = srhfrm['resort_dd['+level_num+']'];
		
		// Clear the accommodation dd, but only if the resort dropdowns are visible
		if (!document.getElementById('srhfrm_resort_dd_'+level_num))
		{
			if (document.getElementById('srhfrm_resort_dd_'+(level_num-1)))
			{
				srhfrm_update_accomm(srhfrm, old_accomm);
			}
			return false;
		}
		
		if (!old_values)
		{
			old_values = new Array();
			for (var i = level_num; srhfrm['resort_dd['+i+']']; i++)
			{
				old_values.push(srhfrm['resort_dd['+i+']'].value);
			}
		}
		if (!old_accomm && srhfrm.property_id)
		{
			old_accomm = srhfrm.property_id.value;
		}
		
		// Variable number of dots to show what is doing the updating
		var loading_text = 'Loading.........';
		loading_text = loading_text.substr(0, 7 + level_num);
		for (var i = level_num; srhfrm['resort_dd['+i+']']; i++)
		{
			srhfrm_fill_dropdown('srhfrm_resort_dd_'+i, new Array({'value': '', 'display': loading_text}), 0);
		}
		if (srhfrm['resort_dd['+level_num+']'])
		{
			srhfrm_fill_dropdown('srhfrm_accomm', new Array({'value': '', 'display': loading_text}), 0);
		}
		if (level_num > 1)
		{
			var parent_level_num = level_num - 1;
			var parent_resort_dd_id = srhfrm['resort_dd['+parent_level_num+']'].value;
			if (parent_resort_dd_id.substr(0, 2) == -1 || srhfrm['resort_dd['+parent_level_num+']'].disabled)
			{
				srhfrm_fill_dropdown('srhfrm_resort_dd_'+level_num, new Array({'value': '', 'display': laquo+' Please select '+raquo}), 0);
				// Fill any lower level dropdowns with 'any' and update the accommodation
				srhfrm_update_resort_dd(srhfrm, level_num + 1);
				return;
			}
		}
		
		var resort_dd_set_id = srhfrm['resort_dd_set_id'].value;
		
		if (srhfrm['airportfromid'])
		{
			var dep_airport_id = srhfrm['airportfromid'].value;
		}
		else if (srhfrm['airportcombinedfromid'])
		{
			if (srhfrm['airportcombinedfromid'].value == -1)
			{
				var dep_airport_id = -1;
			}

			else
			{
				var dep_airport_id = srhfrm['airportcombinedfromid'].value.substr(1, srhfrm['airportcombinedfromid'].length);
			}
		}
		else
		{
			var dep_airport_id = -1;
		}
		
//			if (document.getElementById('srhfrm_destination_airport') 
//				&& document.getElementById('srhfrm_destination_airport').value 
//				&& document.getElementById('srhfrm_destination_airport').value != -1)
//			{
//				var airport_to_id = document.getElementById('srhfrm_destination_airport').value;
//			}
//			else if (document.getElementById('srhfrm_destination_airport_combined') 
//					 && document.getElementById('srhfrm_destination_airport_combined').value
//					 && document.getElementById('srhfrm_destination_airport_combined').value != -1)
//			{
//				var airport_to_id = document.getElementById('srhfrm_destination_airport_combined').value;
//			}
//			else
//			{
//				// No destination airport - Don't get resorts 
//				srhfrm_fill_dropdown('srhfrm_resort', new Array({'value': '', 'display': laquo+' Any '+raquo}), 0);
//				return true;
//			}
//			srhfrm_highlight_required(srhfrm);
//			srhfrm_save_values(srhfrm);
		
		var xmlhttprequest = create_xml_http_request();
		xmlhttprequest.onreadystatechange = function()
		{
			if(xmlhttprequest.readyState == 4 && xmlhttprequest.status == 200)
			{
				var doc = xmlhttprequest.responseXML;
				var root = doc.documentElement;
				var nds;
				resort_dd_element.options.length = 0;
						
				if(root.hasChildNodes()) 
				{
					nds=root.childNodes;
					var len = nds.length;
					for (var i = 0; i < len; i++)
					{
						if(nds[i].nodeName == 'ResortDD')
						{
							resort_dd_element.options[resort_dd_element.options.length] = new Option(nds[i].getAttribute("name"), nds[i].getAttribute("value") + ',' + nds[i].getAttribute("is_searchable"));
						}
					}
				}
				if (resort_dd_element.length > 1)
				{
					resort_dd_element.disabled = false;
					// If there is only one option, choose it
					if (resort_dd_element.length == 2 && (resort_dd_element.options[0].value == -1 || resort_dd_element.options[0].value == ''))
					{
						resort_dd_element.selectedIndex = 1;
					}
					// Repopulate if the option is in the list.
					else if (old_values[0])
					{
						srhfrm['resort_dd['+level_num+']'].value = old_values[0];
					}
					else
					{
						// Make sure we at least select something
						resort_dd_element.selectedIndex = 0;
					}
					if (resort_dd_element.selectedIndex == -1)
					{
						// Make sure we at least select something
						resort_dd_element.selectedIndex = 0;
					}
				}
				else
				{
					resort_dd_element.disabled = true;
					srhfrm_fill_dropdown('srhfrm_resort_dd_'+level_num, new Array({'value': '', 'display': laquo+' Any '+raquo}), 0);
					resort_dd_element.selectedIndex = 0;
				}
				srhfrm_update_resort_dd(srhfrm, level_num + 1, old_values.slice(1), old_accomm);
			}
		}
		xml_url = '/fetch_opts.php?mode=resort_dd&resort_dd_set_id='+resort_dd_set_id+'&level_num='+level_num+'&dep_airport_id='+dep_airport_id;
		if (parent_resort_dd_id)
		{
			xml_url += '&parent_resort_dd_id='+parent_resort_dd_id;
		}
		xmlhttprequest.open('GET', xml_url, true);
		xmlhttprequest.send(null);
		srhfrm_save_values(srhfrm);
	}
	
	function srhfrm_update_resorts(srhfrm)
	{
		srhfrm_fill_dropdown('srhfrm_resort', new Array({'value': '', 'display': 'Loading...'}), 0);
		
		if (document.getElementById('srhfrm_destination_airport') 
			&& document.getElementById('srhfrm_destination_airport').value 
			&& document.getElementById('srhfrm_destination_airport').value != -1)
		{
			var airport_to_id = document.getElementById('srhfrm_destination_airport').value;
		}
		else if (
			   document.getElementById('srhfrm_destination_airport_combined') 
			&& document.getElementById('srhfrm_destination_airport_combined').value
			&& document.getElementById('srhfrm_destination_airport_combined').value != -1
			&& document.getElementById('srhfrm_destination_airport_combined').value != -1
			&& document.getElementById('srhfrm_destination_airport_combined').value.substring(0,1) == '|'
		)
		{
			// The value here will be of the form "|airport_id"
			var airport_to_id = document.getElementById('srhfrm_destination_airport_combined').value.substring(1);
		}
		else
		{
			// No destination airport - Don't get resorts 
			srhfrm_fill_dropdown('srhfrm_resort', new Array({'value': '', 'display': laquo+' Any '+raquo}), 0);
			return true;
		}
		srhfrm_highlight_required(srhfrm);
		srhfrm_save_values(srhfrm);
		
		var xmlhttprequest = create_xml_http_request();
		xmlhttprequest.onreadystatechange = function()
		{
			if(xmlhttprequest.readyState == 4 && xmlhttprequest.status == 200)
			{
				var doc = xmlhttprequest.responseXML;
				var root = doc.documentElement;
				var resorts = document.getElementById('srhfrm_resort');
				if ( ! resorts )
				{
					return false;
				}
				resorts.options.length = 0;
				var nds;		
						
				if(root.hasChildNodes()) 
				{
					nds=root.childNodes;
					var len = nds.length;
					for (var i = 0; i < len; i++)
					{
						if(nds[i].nodeName == 'resort')
						{
							resorts.options[resorts.options.length] = new Option(nds[i].getAttribute("name"), nds[i].getAttribute("value"));
						}
					}
				}
				
				
				if (resorts.length > 1)
				{
					resorts.disabled = false;
					// If there is only one option, choose it
					if (resorts.length == 2 && (resorts.options[0].value == -1 || resorts.options[0].value == ''))
					{
						resorts.selectedIndex = 1;
					}
					// Repopulate if the option is in the list.
					else if (srhfrm.resortid && srhfrm && srhfrm.repop_srhfrm_resort && srhfrm.repop_srhfrm_resort.value) 
					{
						srhfrm.resortid.value = srhfrm.repop_srhfrm_resort.value;
					}
				}
				else
				{
					resorts.disabled = true;
					srhfrm_fill_dropdown('srhfrm_accomm', new Array({'value': '', 'display': laquo+' Any '+raquo}), 0);
				}
				srhfrm_update_accomm(srhfrm);
			}
		}
		xmlhttprequest.open('GET', '/fetch_opts.php?mode=resorts&airport_to_id='+airport_to_id, true);
		xmlhttprequest.send(null);
		srhfrm_save_values(srhfrm);
	}
	
	function srhfrm_update_accomm(srhfrm, old_accomm)
	{
		var select_element = srhfrm.property_id;
		srhfrm_save_values(srhfrm);
		if (!select_element) { return true; }
		if (!old_accomm)
		{
			old_accomm = select_element.value;
		}
		srhfrm_fill_dropdown('srhfrm_accomm', new Array({'value': '', 'display': 'Loading...'}), 0);
		var xmlhttprequest = create_xml_http_request();
		// Resort dd set based
		if (srhfrm['resort_dd[1]'] || srhfrm['resort_dd[2]'])
		{
			for (var i = 5; i >= 0; i--)
			{
				
				if (srhfrm['resort_dd[' + i + ']'] 
					&& srhfrm['resort_dd[' + i + ']'].selectedIndex != -1 // Aparently IE thinks -1 is a natural number
					&& srhfrm['resort_dd[' + i + ']'][srhfrm['resort_dd[' + i + ']'].selectedIndex]
					&& srhfrm['resort_dd[' + i + ']'][srhfrm['resort_dd[' + i + ']'].selectedIndex].value 
					&& srhfrm['resort_dd[' + i + ']'][srhfrm['resort_dd[' + i + ']'].selectedIndex].value != -1
					&& srhfrm['resort_dd[' + i + ']'][srhfrm['resort_dd[' + i + ']'].selectedIndex].value != "-1,null"
				)
				{
					var param = 'resort_dd_id='+srhfrm['resort_dd[' + i + ']'][srhfrm['resort_dd[' + i + ']'].selectedIndex].value;
					break;
				}
			}

			if (document.getElementById('resort_autocomplete'))
			{
				var param = 'resort_dd_id='+srhfrm['resort_dd[1]'].value;
			}

			if (!param)
			{
				srhfrm_fill_dropdown('srhfrm_accomm', new Array({'value': '', 'display': laquo+' Any '+raquo}), 0);
					console.log(select_element);
				return true;
			}
		}
		// Airport group set based
		else if (document.getElementById('srhfrm_resort') 
			&& document.getElementById('srhfrm_resort').value 
			&& document.getElementById('srhfrm_resort').value != -1)
		{
			var param = 'region_id=' + document.getElementById('srhfrm_resort').value;
		}
		else if (document.getElementById('srhfrm_destination_airport') 
			&& document.getElementById('srhfrm_destination_airport').value 
			&& document.getElementById('srhfrm_destination_airport').value != -1)
		{
			var param = 'airport_to_id=' + document.getElementById('srhfrm_destination_airport').value;
		}
		else if (document.getElementById('srhfrm_destination_airport_combined') 
				 && document.getElementById('srhfrm_destination_airport_combined').value
				 && document.getElementById('srhfrm_destination_airport_combined').value != -1)
		{
			var param = 'airport_to_id=' + document.getElementById('srhfrm_destination_airport_combined').value;
		}
		else
		{
			// No destination - Don't get accomm 
			srhfrm_fill_dropdown('srhfrm_accomm', new Array({'value': '', 'display': laquo+' Any '+raquo}), 0);
			return true;
		}
		
		xmlhttprequest.onreadystatechange = function()
		{
			if(xmlhttprequest.readyState == 4 && xmlhttprequest.status == 200)
			{
				var doc = xmlhttprequest.responseXML;
				var root = doc.documentElement;
				var accomm = document.getElementById('srhfrm_accomm');
				if ( ! accomm )
				{
					return false;
				}
				accomm.options.length = 0;
				var nds;		
						
				if(root.hasChildNodes()) 
				{
					nds=root.childNodes;
					var len = nds.length;
					for (var i = 0; i < len; i++)
					{
						
						if(nds[i].nodeName == 'AccommItem')
						{
							accomm.options[accomm.options.length] = new Option(nds[i].getAttribute("name"), nds[i].getAttribute("value"));
						}
					}
				}
	
				accomm.disabled = false;
				// Repopulate if the option is in the list.
				if (old_accomm)
				{
					accomm.value = old_accomm;
				}
				else if (srhfrm.repop_srhfrm_accomm && srhfrm.repop_srhfrm_accomm.value) 
				{
					// TODO: jquery would probably handle this nastyness better,
					//       but we're not currently dependent on jquery

					// In most browers, if value is not in the select list then the
					//  first option ("< any >") will be selected.
					accomm.value = srhfrm.repop_srhfrm_accomm.value;
					if (!accomm.value)
					{
						// In IE we need to explictly reset it to "< any >".
						accomm.value = '';
					}
				}
			}
		}
		xml_url = '/fetch_opts.php?mode=accomm&'+param;
		if (srhfrm.rating && srhfrm.rating.value)
		{
			xml_url += '&min_rating='+srhfrm.rating.value;
		}
		xmlhttprequest.open('GET', xml_url, true);
		xmlhttprequest.send(null);
		// srhfrm_save_values(srhfrm);
	}
	
	function srhfrm_fill_dropdown(dropdown_id, options, keep_first)
	{
		var select_element = document.getElementById(dropdown_id);
		
		if (!select_element) { return true; }
		
		// Clear out elements (if keepFirst is 1, the first item, probably "Any", will be kept)
		select_element.length = keep_first
		
		for (var i = 0; i < options.length; i++)
		{
			select_element.options[i] = new Option(options[i]['display'], options[i]['value']);
		}
		if (options.length <= 1)
		{
			select_element.disabled = true;
		}
		else
		{
			select_element.disabled = false;
		}
		
		select_element.selectedIndex = 0; // Make sure we have a sensible item selected (IE defaults to -1!)
	}
	
	function srhfrm_update_children(srhfrm)
	{
		var total_children = 0; 
		if (document.getElementById('srhfrm_num_rooms'))
		{
			var selected_rooms = document.getElementById('srhfrm_num_rooms').value;
		}
		else
		{
			var selected_rooms = 1;
		}

		if (document.getElementById('srhfrm_children'))
		{
			total_children = parseInt(document.getElementById('srhfrm_children').value);
		}
		else
		{
			for (var j = 1; j <= selected_rooms; j++)
			{
				total_children = total_children + parseInt(document.getElementById('srhfrm_children_' + j).value);
			}
		}
		
		for (var i = 1; i <= cfgMaxChildren; i++)
		{
			if (document.getElementById('srhfrm_child_' + i + '_row'))
			{
				if (i <= total_children)
				{
					// Set display to inherit value from parent because IE needs block and Moz needs table-row
					document.getElementById('srhfrm_child_' + i + '_row').style.display = '';
				}
				else if (document.getElementById('srhfrm_child_' + i))
				{
					document.getElementById('srhfrm_child_' + i + '_row').style.display = 'none';
					document.getElementById('srhfrm_child_' + i).value = '-1';
				}
			}
		}
		srhfrm_save_values(srhfrm);
	}
	
	function srhfrm_update_rooms_rows(srhfrm)
	{
		for (var i = 1; i <= cfgMaxRooms; i++)
		{
			if (document.getElementById('srhfrm_room_' + i + '_row'))
			{
				if (srhfrm.numrooms && 
					i <= srhfrm.numrooms.value)
				{
					// Set display to inherit value from parent because IE needs block and Moz needs table-row
					document.getElementById('srhfrm_room_' + i + '_row').style.display = '';
				}
				else if (document.getElementById('srhfrm_room_' + i + '_row'))
				{
					document.getElementById('srhfrm_room_' + i + '_row').style.display = 'none';
				}
			}
		}
		srhfrm_update_children(srhfrm);
		srhfrm_save_values(srhfrm);
	}
	
	function srhfrm_highlight_required(srhfrm)
	{
		for (var i = 0; i < required_fields.length; i++)
		{
			if ( eval('srhfrm.' + required_fields[i]) )
			{
				if (eval('srhfrm.' + required_fields[i]).value && eval('srhfrm.' + required_fields[i]).value != -1)
				{
					eval('srhfrm.' + required_fields[i]).className = 'srhfrm_dropdown';
				}
				else
				{
					eval('srhfrm.' + required_fields[i]).className = 'srhfrm_dropdown srhfrm_required';
				}
			}
		}
	}
	
	function srhfrm_save_rating_value(srhfrm)
	{
		if(document.getElementById('srhfrm_rating').value 
		   && document.getElementById('srhfrm_rating').value != -1)
		   {
			  srhfrm_save_values(srhfrm);
		   }
	}
	
	function srhfrm_save_board_value(srhfrm)
	{
		if(document.getElementById('srhfrm_board_basis').value 
		   && document.getElementById('srhfrm_board_basis').value != -1)
		   {
			   srhfrm_save_values(srhfrm)
		   }
	}
	
	function srhfrm_save_property_value(srhfrm)
	{
		if(document.getElementById('srhfrm_accomm').value 
		   && document.getElementById('srhfrm_accomm').value != -1)
		   {
			   srhfrm_save_values(srhfrm)
		   }
	}
	
	// Store form values in a cookie for when user clicks 'back'
	function srhfrm_save_values(objForm)
	{
		/* General Params */
		var cookieString = '';
		
		if(objForm.departure_monthyear && objForm.departure_day)
		{
			cookieString += 'general_params,departure_date,' 
				+ objForm.departure_monthyear.value + '-' + objForm.departure_day.value + '|';
		}
		else if(objForm.departure)
		{
			cookieString += 'general_params,departure_date,' + objForm.departure.value + '|';
		}
		
		var resort_dd_ids = '';
		for (var i = 1; objForm['resort_dd['+i+']']; i++)
		{
			if (resort_dd_ids) { resort_dd_ids += ','; }
			resort_dd_ids += objForm['resort_dd['+i+']'].value.substr(0, objForm['resort_dd['+i+']'].value.indexOf(','));
		}
		if (resort_dd_ids) { cookieString += 'general_params,resort_dd_ids,' + resort_dd_ids + '|'; }
		
		if(objForm.duration) 		{ cookieString += 'general_params,duration,' + objForm.duration.value + '|'; }
		
		/* Flight Section */
		var airportfromgroup, airportfrom;
		if ( objForm.airportcombinedfromid )
		{
			var fromairports = objForm.airportcombinedfromid.value.split('|');
			if( fromairports.length == 1 )
			{
				airportfromgroup = fromairports[0];
				airportfrom = undefined;
			}
			else
			{
				airportfromgroup = undefined;
				airportfrom = fromairports[1];
			}
		}
		else
		{
			if(objForm.airportgroupfromid) 	{ airportfromgroup = objForm.airportgroupfromid.value; }
			if(objForm.airportfromid) 	{ airportfrom = objForm.airportfromid.value; }
		}
		if(airportfromgroup) 		{ cookieString += 'flight,airport_group_from_id,' + airportfromgroup + '|'; }
		if(airportfrom)			{ cookieString += 'flight,airport_from_id,' + airportfrom + '|'; }
		
		var airporttogroup, airportto;
		if ( objForm.airportcombinedtoid )
		{
			var toairports = objForm.airportcombinedtoid.value.split('|');
			if( toairports.length == 1 )
			{
				airporttogroup = toairports[0];
				airportto = undefined;
			}
			else
			{
				airporttogroup = undefined;
				airportto = toairports[1];
			}
		}
		else
		{
			if(objForm.airportgrouptoid) 	{ airporttogroup = objForm.airportgrouptoid.value; }
			if(objForm.airporttoid) 	{ airportto = objForm.airporttoid.value; }
		}
		if(airporttogroup) 		{ cookieString += 'flight,airport_group_to_id,' + airporttogroup + '|'; }
		if(airportto) 			{ cookieString += 'flight,airport_to_id,' + airportto + '|'; }
		
		/* Accommodation Section */
		if(objForm.resorttoid) 		{ cookieString += 'accommodation,resort_id,' + objForm.resorttoid.value + '|'; }
		if(objForm.boardbasis) 		{ cookieString += 'accommodation,board_code,' + objForm.boardbasis.value + '|'; }
		if(objForm.rating) 		{ cookieString += 'accommodation,rating,' + objForm.rating.value + '|'; }
		
		/* Occupancy Section */
		if(objForm.numrooms) 		{ cookieString += 'occupancy,num_rooms,' + objForm.numrooms.value + '|'; }
		if(objForm.adults) 		{ cookieString += 'occupancy,adults,' + objForm.adults.value + '|'; }
		if(objForm.infants)		{ cookieString += 'occupancy,infants,' + objForm.infants.value + '|'; }
		if(objForm.children)
		{
			if (objForm.children.value == 0)
			{
				cookieString += 'occupancy,childages,undefined|';
			}
			else
			{
				for (i = 1; objForm['child'+i]; i++)
				{
					if (i <= objForm.children.value)
					{
						if(i == 1)
						{
							childages = objForm['child'+i].value;
						}
						else
						{
							childages += ","+objForm['child'+i].value;
						}
					}
				}
				if (childages)
				{
					cookieString += 'occupancy,childages,' + childages + '|';
				}
			}
		}
		
		if (objForm.show_only_direct)
		{
			cookieString += 'flight,show_only_direct,' + objForm.show_only_direct.value + '|';
		}
		
		document.cookie = 'SearchFormValues=' + encodeURIComponent(cookieString) + '; path=/';
		return true;
	}
	
	function srhfrm_update_return(srhfrm)
	{
		srhfrm_save_values(srhfrm);

		if (document.getElementById("srhfrm_duration") == null 
			|| document.getElementById("srhfrm_departure_date") == null
			|| document.getElementById("srhfrm_return_text") == null)
		{
			
			return;
		}
		
		var duration = document.getElementById("srhfrm_duration").value.split("-");
		var deps = document.getElementById("srhfrm_departure_date").value.split("-");
		var return_text = document.getElementById("srhfrm_return_text");
					
		// Add extra 12 hours so we are always looking midday - avoids problems with Daylight Saving changes.
		var departure = new Date(deps[0], deps[1] - 1, deps[2], 12);
		var checkout = new Date(departure.getTime() + (duration[0] * 1000 * 60 * 60 * 24));
							
		var datestring = checkout.toDateString();
		
		// Not sure why, but this regex doesn't seem to have any effect, so using split() instead.
		 datestring = datestring.replace(/^(\w{3})\s(\w{3})\s(\d{1,2})(.*)/, "$1, $3 $2$4");

		return_text.innerHTML = datestring;
		 
		//var datearray = datestring.split(' ');
		//return_text.innerHTML = datearray[0] + ', ' + datearray[2] + ' ' + datearray[1] + ' ' + datearray[3];
	}
	
	function srhfrm_validate(srhfrm)
	{
		var errors = new Array();

		for (var i = 0; i < required_fields.length; i++)
		{
			if (srhfrm[required_fields[i]] && (!srhfrm[required_fields[i]].value || srhfrm[required_fields[i]].value == -1))
			{
				// Would be better not to hard code the field labels here.
				if (required_fields[i] == 'airportgroupfromid')
				{
					errors.push('Departure airport group');
				}
				else if (required_fields[i] == 'airportcombinedfromid'
				      || required_fields[i] == 'airportfromid'
				      || required_fields[i] == 'airportfromcode')
				{
					errors.push('Departure airport');
				}
				else if (required_fields[i] == 'airportgrouptoid')
				{
					errors.push('Destination airport group');
				}
				else if (required_fields[i] == 'airportcombinedtoid' || required_fields[i] == 'airporttoid')
				{
					errors.push('Destination airport');
				}
				else 
				{
					errors.push(required_fields[i]);
				}
			}
		}
		if (srhfrm['resort_dd[1]'])
		{
			var selected_dropdown_is_searchable = false;
			var lowest_not_selected;
			for (var i = 1; i < 10; i++)
			{
				if (srhfrm['resort_dd['+i+']'])
				{
					// Negative substring indexes don't work in IE, so:
					if (srhfrm['resort_dd['+i+']'].value.substr(
						srhfrm['resort_dd['+i+']'].value.length - 4
					) == 'true')
					{
						selected_dropdown_is_searchable = true;
					}
					
					else if (
						!selected_dropdown_is_searchable
						&& !lowest_not_selected
						&& typeof srhfrm['resort_dd['+i+']'].value != 'undefined'
						&& ( srhfrm['resort_dd['+i+']'].value.substr(0, 2) == '-1'
						   || srhfrm['resort_dd['+i+']'].value == '' )
					)
					{
						lowest_not_selected = i;
						errors.push(srhfrm['dd_'+i+'_label'].value);
					}
				}
				else
				{
					break;
				}
			}
		}

		// Check that ages have been entered for all children specified.
		if (srhfrm['children'] && srhfrm['children'].value > 0)
		{
			for (var i = 1; i <= srhfrm['children'].value; i++)
			{
				
				if (srhfrm['child' + i])
				{
					if (isNaN(parseInt(srhfrm['child' + i].value, 10)))
					{
						if (srhfrm['children'].value == 1)
						{
							errors.push('Child age');
						}
						else
						{
							errors.push('Child ' + i + ' age');
						}
					}
					else if (parseInt(srhfrm['child' + i].value, 10) < 2)
					{
						if (srhfrm['children'].value == 1)
						{
							errors.push('Child is under minimum age.');
						}
						else
						{
							errors.push('Child ' + i + ' is under minimum age.');
						}
					}
					else if (parseInt(srhfrm['child' + i].value, 10) >= 18)
					{
						if (srhfrm['children'].value == 1)
						{
							errors.push('Child is over maximum age.');
						}
						else
						{
							errors.push('Child ' + i + ' is over maximum age.');
						}
					}
				}
			}
		}
		
		if ( typeof srhfrm_validate_callback == 'function' )
		{
			srhfrm_validate_callback(errors);
		}
		
		if (errors.length > 0)
		{
			error_message = 'Please enter or correct the following information:\n';
			for (var j = 0; j < errors.length; j++)
			{
				error_message += '\n' + errors[j];
			}
			alert(error_message);
			return false;
		}
		else
		{
			return true;
		}
	}
	
	function duration_display(flight_type, srhfrm)
	{
		duration_row = document.getElementById('srhfrm_duration_row');
		duration = document.getElementById('srhfrm_duration');
		one_way_departures = document.getElementById('onewaydepartures');
		normal_departures = document.getElementById('normaldepartures');
		one_way_select_field = document.getElementById('srhfrm_one_way_departure_airport');
		
		normal_departures_field = document.getElementById('srhfrm_departure_airport');
		
		var str_one_way_dep = one_way_select_field.value;
		
		if(flight_type.value == 'one_way')
		{
			duration_row.style.display = 'none';
			duration.value = "-1";
			one_way_departures.style.display = '';
			normal_departures.style.display = 'none';
			one_way_select_field.style.display = '';
			// Set value to that of normal departures field
			one_way_select_field.value = "|" + normal_departures_field.value;
		}
		else
		{
			duration_row.style.display = '';
			duration.value = "7-7";
			one_way_departures.style.display = 'none';
			normal_departures.style.display = '';
			one_way_select_field.style.display = 'none';
			
			normal_departures_field.value = str_one_way_dep.replace('|', '');
		}
		
		// update destination fields
		srhfrm_update_destination_airport_groups(srhfrm);
	}

	function srhfrm_save_cookie(srhfrm)
	{
		var cookie_values = new Array();
		for (var i = 0; i < srhfrm.elements.length; i++)
		{
			cookie_values.push(srhfrm[i].name + '=' + srhfrm[i].value);
		}
		var cookie_name = 'srhfrm_' + srhfrm['search_id'];
		document.cookie=cookie_name + "=" +escape(cookie_values.join('|'));
	}