function popup(mylink, windowname) {
	if (!window.focus)return true;
	var href;
		if (typeof(mylink) == 'string')
   		href=mylink;
	else
   	href=mylink.href;
	window.open(href, windowname,'width=850,height=800,scrollbars=yes,status=yes,resizable=yes ');
	return false;
}