function preloadImages() {
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function changeNav(button,mode) {
	document[button].src = "/media/images/" + button + "_" + mode + ".gif";
}

function updateMakes(form) {
	if (form.year.selectedIndex != 0) {
		form.model.length = 0;
		form.make.length = 1;
		form.make[0].value = "";
		form.make[0].text = "Please Wait...";
		dataloc = "dataloader.cfm?year=" + form.year[form.year.selectedIndex].value;
		formframe.location.replace(dataloc);
		history.current = this.location;
	}
}

function updateModels(form) {
	if (form.make.selectedIndex != 0) {
		form.model.length = 1;
		form.model[0].value = "";
		form.model[0].text = "Please Wait...";
		dataloc = "dataloader.cfm?year=" + form.year[form.year.selectedIndex].value + "&make=" + form.make[form.make.selectedIndex].value;
		formframe.location.replace(dataloc);
		history.current = this.location;
	}
}

function checkLeftOrderForm(form) {
	if (form.make.length <= 1 || form.model.length <= 1 || form.year[form.year.selectedIndex].value == "" || form.make[form.make.selectedIndex].value == "" || form.model[form.model.selectedIndex].value == "") {
		alert("Please select the year, make, and model to find your parts");
		return false;
	}
	return true;
}