Added the function to change the thumbnail URL when clinking on the image.

updatethumbnail.js

@@ -0,0 +1,41 @@
+function thumbnailupdateurl(gameid, gamename) {
+
+	var sql;
+
+	var url = prompt("Enter Image URL for " + gamename + " (" + gameid + ")", "");
+
+	if (url == "") {
+
+		alert ("Enter something !");
+
+	} else {
+
+	    var data = {
+	    	'what': 'thumbnail',
+            'gameid': gameid,
+            'gamename': gamename,
+            'url': url
+    	};
+
+
+	    $.ajax(
+			{
+			    type: "POST",
+			    url: "post.php",
+			    data: data,
+			    success: function(data, textStatus, jqXHR)
+			    {
+					$( document ).ready(function(){
+						$('#message').html(data);
+						$('#message').fadeIn('slow', function(){
+							$('#message').delay(3000).fadeOut();
+						});
+						$("#page").load('page.php');
+					});
+
+			    }
+			});
+
+	}
+
+}