//opens a popup
function openPopup(url, height, width, name)
{
	//defaults
	if(!width) width = '400';
	if(!height) height = '320';
	if(!name) name = 'info';
	
	window.open(url, name, 'left=100, top=100, width=' + width + ', height=' + height + ', resizable=1, scrollbars=1');
}