function validEmail(val){
	var value = val.value;
	var error;
	if ((/.+@.+\..+/.test(value)==false)&&(value!="")){
		error = "Please enter a valid email address.\n";
	}
	if (error) {
		alert(error); 
		val.focus(); 
		val.select();
		document.getElementById(val.name).focus();
	}
}