--- a/ajax.js	Tue Nov 18 23:00:57 2014 +0200
+++ b/ajax.js	Tue Nov 18 23:37:46 2014 +0200
@@ -188,3 +188,20 @@
   }
 }
 
+
+function jsShowPreviewImage(file)
+{
+  var nitem = document.getElementById("messageBox");
+  if (nitem)
+  {
+    nitem.innerHTML = "<img src='"+file+"' alt='"+file+"' /><br />"+
+      "<div class='messageBoxControls'>"+
+      "<input id='messageBoxClose' type='button' value=' Close '>"+
+      "</div>";
+
+    var elem = document.getElementById("messageBoxClose");
+    elem.onclick = function () { jsCloseMessageBox(0, 0); }
+
+    nitem.style.display = "block";
+  }
+}