function showPhoto(theURL,imgWidth,imgHeight) {
var border = 50;
var img = Image;
var features;
var w;
var h;
winWidth = (imgWidth<100) ? 100 : imgWidth+border;
winHeight = (imgHeight<100) ? 100 : imgHeight+border;
if (imgWidth+border > screen.width) {
winWidth = screen.width-10;
w = (screen.width - winWidth)/2;
features = "scrollbars=yes";
} else {
w = (screen.width - (imgWidth+border))/2;
}
if (imgHeight+border > screen.height) {
winHeight = screen.height-60;
h = 0;
features = "scrollbars=yes";
} else {
h = (screen.height - (imgHeight+border))/2 - 20;
}
winName = 'image';
features = features+',status=no,menubar=no,location=no,toolbar=no,width='+winWidth+',height='+winHeight+',top='+h+',left='+w;
popup = window.open(theURL,winName,features);
popup.document.open();
popup.document.write('Grote foto');
popup.document.write('');
popup.document.write('
');
popup.document.write('
');
popup.document.close();
popup.focus();
}