function gallery(www_root,pgid,phid,width,height) {
var xposition = (screen.availwidth-width)/3;
var yposition = (screen.availheight-height)/3;
okno = window.open(www_root+"largeimg.php?pgid="+pgid+"&phid="+phid,"","width="+width+",height="+height+",toolbar=no,scrollbars=no,location=no,status=no,resizable=yes");
okno.moveTo(xposition,yposition);
}