function validate(){
	if(!isZIPCode(document.forms[0].elements["zipcode"].value)){
		alert("Valid Zip required!");
		document.forms[0].elements["zipcode"].focus();
		document.forms[0].elements["zipcode"].value = "";
		return false;
	}
	else{
		var zip = document.forms[0].elements["zipcode"].value;
		window.location="http://www.dodge.com/bridge/index.html?app=cdl&zipcode=" + zip;
		return false;
	}
}