function Validate(f) {
		
			f.pageUrl.value = document.URL;
			
			if (f.email.value == "") {
				alert("Enter your email address");
				f.email.focus();
				return false;
			}
			else{
					 var texteEmail = f.email.value;
					 var verif = /^[a-zA-Z0-9_-]+@[a-zA-Z0-9-]{2,}[.][a-zA-Z]{2,3}$/
					 if (verif.exec(texteEmail) == null)
					 {
					 alert("Your email is not valid.");
					 return false;
					 }
			}
		
				if (f.code.value == "") {
					alert("Re-enter the security code.");
					f.code.focus();
					return false;
				}
			
				return true;
			};