var makesArray = [[6,"BMW"],[7,"Buick"],[9,"Chevrolet"],[10,"Chrysler"],[11,"Dodge"],[1,"Ford"],[13,"Geo"],[14,"GMC"],[15,"Honda"],[16,"Hyundai"],[18,"Jeep"],[19,"Kia"],[2,"Lincoln"],[20,"Mazda"],[39,"Mercedes"],[3,"Mercury"],[37,"Mitsubishi"],[21,"Nissan"],[24,"Pontiac"],[26,"Saturn"],[27,"Subaru"],[28,"Toyota"],[29,"Volkswagen"]];
var modelsArray = [[216,10,"300"],[87,6,"325i"],[360,20,"626"],[307,15,"Accord"],[1,1,"Aerostar"],[173,9,"Astro"],[174,9,"Avalanche"],[362,20,"B-Series Pickup"],[177,9,"Blazer"],[627,39,"C230"],[672,39,"C280"],[180,9,"Cavalier"],[144,7,"Century"],[342,18,"Cherokee"],[219,10,"Cirrus"],[308,15,"Civic"],[631,9,"Cobalt"],[36,2,"Continental"],[493,28,"Corolla"],[45,3,"Cougar"],[309,15,"CR-V"],[245,11,"Dakota"],[646,1,"Edge"],[321,16,"Elantra"],[8,1,"Escape"],[597,1,"Escape Hybrid"],[12,1,"Expedition"],[13,1,"Explorer"],[14,1,"Explorer Sport Trac"],[16,1,"F150"],[17,1,"F250"],[18,1,"F350"],[667,1,"Flex"],[21,1,"Focus"],[22,1,"Freestar"],[612,1,"Fusion"],[649,24,"G6"],[250,11,"Grand Caravan"],[345,18,"Grand Cherokee"],[437,24,"Grand Prix"],[481,27,"Impreza"],[459,26,"ION"],[523,29,"Jetta"],[288,14,"Jimmy"],[347,18,"Liberty"],[37,2,"LS"],[498,28,"Matrix"],[278,13,"Metro"],[670,2,"MKS"],[656,2,"MKX"],[642,2,"MKZ"],[440,24,"Montana"],[671,37,"Montero"],[368,20,"MPV"],[24,1,"Mustang"],[41,2,"Navigator"],[387,21,"Pathfinder"],[581,11,"Ram"],[27,1,"Ranger"],[152,7,"Regal"],[353,19,"Rio"],[200,9,"S10 Pickup"],[53,3,"Sable"],[292,14,"Safari"],[323,16,"Santa Fe"],[354,19,"Sedona"],[325,16,"Sonata"],[444,24,"Sunfire"],[211,9,"Tahoe"],[28,1,"Taurus"],[666,1,"Taurus X"],[395,21,"Titan"],[662,16,"Tucson"],[664,9,"Uplander"],[447,24,"Vibe"],[31,1,"Windstar"],[665,28,"Yaris"]];

function UpdateModels(makeIdentifier) {

	// Update models when a make is selected by the visitor
	modelObject = document.searchForm.ModelID;
	modelObject.options[0] = new Option();
	modelObject.options[0].value = "";
	modelObject.options[0].text = "Any Model";
	modelObject.selectedIndex = 0;

	var makeObject = document.searchForm.MakeID;
	var makeIdentifier = makeObject.options[makeObject.selectedIndex].value;

	var counter = 1;
	if(makeIdentifier != "") {
		for(var i = 0; i < modelsArray.length; i++) {
			if(modelsArray[i][1] == makeIdentifier) {
				modelObject.options[counter] = new Option();
				modelObject.options[counter].value = modelsArray[i][0];
				modelObject.options[counter].text = modelsArray[i][2];
				counter++;
			}
		}
	}

	modelObject.length = counter;
}

var PrevOnLoadFunction;

function SetupSearchForm() {

	// Call previously installed onload handler
	if(PrevOnLoadFunction) {
		PrevOnLoadFunction();
	}

	// Populate the make select box
	var makeObject = document.searchForm.MakeID;
	makeObject.onchange = UpdateModels;
	makeObject.options[0] = new Option();
	makeObject.options[0].value = "";
	makeObject.options[0].text = "Any Make";
	for(var i = 0; i < makesArray.length; i++) {
		makeObject.options[i+1] = new Option();
		makeObject.options[i+1].value = makesArray[i][0];
		makeObject.options[i+1].text = makesArray[i][1];
	}
	makeObject.length = makesArray.length + 1;
	makeObject.selectedIndex = 0;

	// Populate the model select box
	var modelObject = document.searchForm.ModelID;
	modelObject.options[0] = new Option();
	modelObject.options[0].value = "";
	modelObject.options[0].text = "Any Model";
	modelObject.length = 1;
	modelObject.selectedIndex = 0;
}

PrevOnLoadFunction = window.onload;
window.onload = SetupSearchForm;