function checkform(form) {
	if (form.first_name.value == "") {
		alert( "Please enter the First Name." );
		form.first_name.focus();
		return false ;
	}
	if (form.last_name.value == "") {
		alert( "Please enter the Last Name." );
		form.last_name.focus();
		return false ;
	}
	if (form.email.value == "") {
		alert( "Please enter the Email Address." );
		form.email.focus();
		return false ;
	}  
	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,6})+$/.test(form.email.value)) {
		null;
	}
	else {
		alert( "Please enter a valid Email Address." );
		form.email.focus();
		return false ;
	}
	return true;
}