function populate_model_home() {		
		document.form_usedcar.model.options.length = 0;
		document.form_usedcar.model[0] = new Option("Select model", "0", false);		
		if (document.form_usedcar.make.selectedIndex != 0) {
			document.form_usedcar.model[1] = new Option("All " + document.form_usedcar.make[document.form_usedcar.make.selectedIndex].value, "all", false);
			for (i = 0; i < model[document.form_usedcar.make.selectedIndex - 1].length; i++) {
				//alert("adding " + model[document.form_usedcar.make.selectedIndex - 1][i]);
				document.form_usedcar.model[i + 2] = new Option(model[document.form_usedcar.make.selectedIndex - 1][i], model[document.form_usedcar.make.selectedIndex - 1][i], false);
			}
		}
	}
	
	function check_model() {
		if (document.form_usedcar.model[document.form_usedcar.model.selectedIndex].value == 0) {
			alert("Please select make & model");
			return false;
		}
		return true;
	}

	function check_type() {
		if (document.form_type.select_type[document.form_type.select_type.selectedIndex].value == 0) {
			alert("Please select type");
			return false;
		}
		return true;
	}

	function search_model() {
		strMake = document.form_usedcar.make[document.form_usedcar.make.selectedIndex].value;
		strModel = document.form_usedcar.model[document.form_usedcar.model.selectedIndex].value;
		document.location.href = "/used-cars/?car=&make=" + strMake + "&model=" + strModel + "&type=&year=any&max=";
	}
	
	function populate_make() {
		if (document.getElementById("make")) {
			document.form_usedcar.make[0] = new Option("Make..", "0", false);
			document.form_usedcar.model[0] = new Option("Model..", "0", false);
			for (i = 0; i < make.length; i++) {
				document.form_usedcar.make[i + 1] = new Option(make[i], make[i], false);
			}
		}
	}

	function search_type() {
		if (document.form_type.select_type[document.form_type.select_type.selectedIndex].value != "0") document.location.href = "/used-cars/?car=&make=&model=&type=" + document.form_type.select_type[document.form_type.select_type.selectedIndex].value + "&year=&max=";
	}

	function openNewCar() {
		if (document.form_newcar.select_newcar[document.form_newcar.select_newcar.selectedIndex].value != "0") {
			//window.open(document.form_newcar.select_newcar[document.form_newcar.select_newcar.selectedIndex].value);
			document.getElementById("newcarlink").href = document.form_newcar.select_newcar[document.form_newcar.select_newcar.selectedIndex].value;
		}
	}

	function doFinance() {
		valBudget = document.getElementById("budget").value;
		valDeposit = document.getElementById("deposit").value;
		valTerm = document.getElementById("term").value;
		
		if (valBudget == "") { alert("Please enter a monthly budget") }
		else {
			if (isNaN(valBudget)) { alert("Please enter a valid monthly budget") }
			else {
				if (valDeposit == "") { alert("Please enter a deposit/trade-in amount") }
				else {
					if (isNaN(valDeposit)) { alert("Please enter a valid deposit/trade-in") }
					else {
						// ok to calc finance						
						totalBudget = Math.round((valBudget/valTerm) * 1000);
						totalBudget = totalBudget + parseFloat(valDeposit);
						document.location.href = "/used-cars/?car=&make=&model=&type=&year=&max=" + totalBudget;
					}
				}				
			}
		}
	}



/*
	Developed by Robert Nyman, http://www.robertnyman.com
	Code/licensing: http://code.google.com/p/getelementsbyclassname/
*/	

function zoom(strImage) {
		getObj("used-main").style.backgroundImage = "url('http://www.appleyard.net/images/usedcars/366x275/" + strImage + "')";
	}

var getElementsByClassName = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return getElementsByClassName(className, tag, elm);
};