function validate() {
emailv=orderform.email.value;
if (emailv=='') {
alert('Your email address is a required field. Please try again.');
event.returnValue=false;
}
//if (!(mainform.Sex[0].checked || mainform.Sex[1].checked)) {
//alert('Your sex is a required field. Please try again.');
//event.returnValue=false;
//}
}