// visibility_popups.js  
// timer visibility functions for popup menus;  
//  assumes you have rollover functions defined for parent rollover graphics
timer_interval = 500;
timer_id = null;
function timeShow(id, rolloverName) {
	imgOn(rolloverName);
	if (timer_id) clearTimeout(timer_id);
	document.getElementById(id).style.display = 'block';
}

function timeHide(id, rolloverName) {
	document.getElementById(id).style.display = 'none';
	imgOff(rolloverName);
}

function timeBlur(id, rolloverName) {
	timer_id = setTimeout('timeHide(\'' + id + '\',\'' + rolloverName + '\');', timer_interval);
}