function showImage(file, w, h)
{
w += 20;
h += 20;
contents = "\n";
contents += "\n";
contents += "Image\n";
contents += "\n";
contents += "\n";
contents += "![](" + file + ")
\n";
contents += "\n";
contents += "\n";
options = "toolbar=0,status=0,menubar=0,scrollbars=1," +
"resizable=1,width="+w+",height="+h;
newwindow=window.open("","mywindow", options);
newwindow.document.write(contents);
newwindow.document.close();
}