function CheckTax()
				{
					valid=true;
					theFrm = document.frmTax;				

					valcheck = document.getElementById("shipping");
					if (valcheck.value == "no") {
						alert("Please select your delivery options.");
						valcheck.focus();
						
						valid=false;
					}
					valcheck = document.getElementById("CustomerEmail");
					hasDot = theFrm.CustomerEmail.value.indexOf(".");
					hasAt = theFrm.CustomerEmail.value.indexOf("@");
					
					if (hasDot == -1 || hasAt == -1)
					{
						alert("Please enter a valid email address.");
						theFrm.CustomerEmail.focus();
						theFrm.CustomerEmail.select();
						valid=false;
					}					
					return valid;		
				
}