function ShowModels(o) {

	var request = false;
	
	try {
	request = new XMLHttpRequest();
	} catch (e) {
	try{
	request = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
	try{
	request = new ActiveXObject("Microsoft.XMLHTTP");
	} catch (e) {
	alert("Unable to complete your request.");
	return false;
	}
	}
	}

request.onreadystatechange = function() {
if(request.readyState == 4) {
if(request.status == 200) {
	document.getElementById('ShowModels').innerHTML = request.responseText;
}
}
}

cat = o.options[o.selectedIndex].value;

 request.open("GET", "/blocks/InNewModes/showModels.php?cat=" + cat, true);
 
request.send(null);
}