function popWindow(imageFile, imageWidth, imageHeight, imageTitle) {
popupWindow = window.close
// if (!popupWindow || popupWindow.closed) {
popupWindow = window.open("", "Popup", "resizable=yes,width="+imageWidth+",height="+imageHeight, false);
// }
popupWindow.document.open();
popupWindow.document.writeln(""+imageTitle+"");
popupWindow.document.writeln("![]("+imageFile+ ")
");
popupWindow.document.writeln("");
popupWindow.document.close();
popupWindow.focus();
}