function popup(link, w, h)
{
   var wi = w;
   w = w < 600 ? 600 : w;
   h = h < 400 ? 400 : h;
	window.open(link,'win2','status=no,toolbar=no,scrollbars=yes,titlebar=no,menubar=no,resizable=yes,width=' + w + ',height=' + h + ',directories=no,location=no,left='+(screen.availWidth/2-w/2)+',top='+(screen.availHeight/2-h/2)+'');
}