function toggleDisplay(obj, img) {
	if (String(img) != 'undefined')
	{
		if (img.src.indexOf("/images/main/toggleExpand.gif") != -1)
		{
			img.src = '/images/main/toggleShrink.gif';
		}
		else if (img.src.indexOf("/images/main/toggleShrink.gif") != -1)
		{
			img.src = '/images/main/toggleExpand.gif';
		}
	}
	var el = document.getElementById(obj);
	if ( el.style.display != 'none' ) {
		el.style.display = 'none';
	}
	else {
		el.style.display = '';
	}
}