function validate( frm ) {

	var returnValue = false;
	
	if ( BlankField( frm.first_name.value ) ) {
		alert( "Please enter your first name." );
		frm.first_name.focus();
	} else if ( BlankField( frm.last_name.value ) ) {
		alert( "Please enter your last name." );
		frm.last_name.focus();
	} else if ( !ValidEmail( frm.email_address.value ) ) {
		alert( "Please enter a valid email address." );
		frm.email_address.focus();
	} else {
		returnValue = true;
	}
	
	return returnValue;

}