function zdisp_nyt(picturename)
{
var width = '750'; 
var height = '600';
if (screen.width) {
var winl = (screen.width-width)/2;
var wint = (screen.height-height)/2;
} else {
var winl = 40;
var wint = 40;
}
var p = 'scrollbars=yes,resizable=yes,toolbar=no,' +'menubar=yes,status=no,location=no,left='+winl+',top='+wint+',height=' + height + ',width=' + width;

win=window.open("zdisp_nyt.php?kuva="+picturename,"Zoom",p);
win.window.focus();
}