function popupinfowindow(mylink, windowname,width,height)
{
	if (!window.focus)
		return true;

	var href;
	if (typeof(mylink) == 'string')
		href=mylink;
	else
		href=mylink.href;
		
	window.open(href, windowname, 'width=' + width + ',height='+ height + ',scrollbars=yes');
	return false;
}