function pop(url,w,h)
{
 iWidth=w;
 iHeight=h;
 G_day = new Date();
 G_seed = G_day.getTime();
 iRand = parseInt(((G_seed - (parseInt(G_seed/1000,10) * 1000))/10)/100*100000 + 1,10);
 winleft = ((screen.width - iWidth) / 2);
 winUp = (screen.height - iHeight) / 2;
 window.open(url,iRand,',width='+iWidth+',height='+iHeight+',left='+winleft+',top='+winUp+',menubar=yes,toolbar=yes,location=yes,status=yes,scrollbars=yes,resizable=yes');
}