var previous;

function rollover(target_event,target_id) {
	if (target_event.target) {	// Firefox + Safari
		previous = target_event.target.src;
		target_event.target.src = '/cgi-local/db_images/pages/uploads/' + target_id + '-rollover.gif';
	}
	else {						// IE
		previous = target_event.srcElement.src;
		target_event.srcElement.src = '/cgi-local/db_images/pages/uploads/' + target_id + '-rollover.gif';
	}
}

function rollout(target_event) {
	if (target_event.target) {	// Firefox + Safari
		target_event.target.src = previous;
	}
	else {						// IE
		target_event.srcElement.src = previous;	
	}
}