function validate(f) {
	
	var e = f.d;
	if ( e.tagName == 'SELECT'  ) {
		var v = e.selectedIndex;
		if ( !v ) {
			alert('Please indicate the purpose of your message.');
			e.focus();
			return false;
		}
	}

	var e = f.message_body;
	var v = e.value;
	
	if ( v.replace( /\s/g, '' ) == '' ) {
		alert( 'Please enter a message.' );
		e.focus();
		return false;
	}

}