function findModel() {
	if (location.search != "")
	{
		var m = ''
		var x = location.search.substr(1).split("&")
		for (var i=0; i<x.length; i++)
		{
			var y = x[i].split("=");
			if (y[0] == 'ModelDropdown')
			{
				var model = y[1];
				while (model.indexOf("%20") > -1)
					model = model.replace("%20", " ");
				return model
			}
		}
	}
}

function switchList() {
	makeList = document.getElementById('MakeDropdown'); // alias list for Make
	modelList = document.getElementById('ModelDropdown'); // alias list for Model
	modelList.options.length = 0; // clear values out of select list
	var lookFor = makeList.options[makeList.selectedIndex].value;
	var loop;
	if (lookFor == '') {
			var newOption = new Option('---- All Models ----','')
			modelList.options[modelList.options.length] = newOption;
	}
	else {
		var newOption = new Option('---- All Models ----','')
		modelList.options[modelList.options.length] = newOption;

		for (loop = 0; loop < dropDownArray.length; loop++) {
			if (lookFor == dropDownArray[loop][0]) {
				newOption = new Option(dropDownArray[loop][1],dropDownArray[loop][1])
				modelList.options[modelList.options.length] = newOption;
			}
		}
		modelList.selectedIndex = 0;
		//alert(findModel());
		for (i = 0; i < modelList.options.length; i++) {
			if (modelList.options[i].value == findModel()) {
				modelList.selectedIndex = i;
			}
		}
	}
}