function sel_src_car(frm) {
	if(frm.elements[0].selectedIndex==-1) {
		alert("Please Select Car Make(s)")
		return false;
	}
}

function chkEmptyZip(frm) {
	 
	if(frm.elements[0].value==0) {
		alert("Please Enter Zip Code");
		 return false;
	}
	
	if(isNaN(frm.elements[0].value)) {
		alert("Please Enter Valid Zip Code");
		frm.elements[0].select();
		 return false;
	}
	
	if(frm.elements[0].value.length!=5) {
			alert("Please Enter valid zip code");
			frm.elements[0].select();
			return false;			
		}

	

 }
 function chk_zip1(frm) {

		var zip = document.forms[0].elements[1];
		
		if(zip.value=="") {
			alert("Please Enter zip code");
			zip.focus();
			return false;
		} 
		
		if(isNaN(zip.value)) {
			alert("Please Enter valid zip code");
			zip.select();
			return false;			
		}
		
		if(zip.value.length!=5) {
			alert("Please Enter valid zip code");
			zip.select();
			return false;			
		}