function popupX(fotourl){
//  window.open(fotourl,'foto','resizable=yes,location=no,menubar=no,scrollbars=no,status=no,toolbar=no,fullscreen=no,dependent=no,width=830,height=630,status');

var i = new Image();

var x = i.width;
var y = i.height;

if (x == 0) x=800;
if (y == 0) y=600;


//alert(x+y);

// window.status for degugging:
window.status = fotourl + " = " + x + " x " + y + " pixels";
var z = "scrollbars=no,resizable=no,location=no,menubar=no,scrollbars=no,status=yes,toolbar=no,fullscreen=no,dependent=no,width=" + (x+20) + ",height=" + (y+20);

//alert(z);

window.open(fotourl,"image",z);

    return;
}