function validateZip(ZipValid)
{
 		if (ZipValid.Zip.value=="")
		{
			alert("Please enter Zip");
			ZipValid.Zip.focus();
			return false;
		}
		if(ZipValid.Zip.value.length<3)
		{
			alert("Please enter minimum three digit Zip");
			ZipValid.Zip.focus();
			return false;
		}		
		return true;

}

function validnumber1()
{
	if ((event.keyCode <= 47 || event.keyCode > 57) && event.keyCode !=13) 
		event.returnValue = false;
}