// -----------
//  Rollovers
// -----------

function rollover (obj) {
	obj.src = 'images/' + obj.name + '_over.png';	
}

function rollout (obj) {
	
	obj.src = 'images/' + obj.name + '.png';	
}

// ------------
// Pop-ups
// ------------

function rawPopup (url, target, width, height, scrolling) {
	var scrolling = isUndefined(scrolling) ? 'yes' : (scrolling ? 'yes' : 'no');
	if (w != null) w.close();
	w = window.open(url, target, 'scrollbars=' + scrolling + ',location=0,statusbar=0,menubar=0,width=' + width + ',height=' + height);
	w.focus();
	return w;
}

function linkPopup (src, width, height) {
	if (isUndefined(width)) width = 525;
	if (isUndefined(height)) height = 575;
	return rawPopup(src.getAttribute('href'), src.getAttribute('target') || '_blank', width, height);
}