changing the background image from jpg to png on the login screen

git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk@4070 b35dd754-fafc-0310-a699-88a17e54d16e

src/web/login.jsp

@@ -174,7 +174,7 @@
 
 
     BODY {
-        background-image : url(images/login_background.jpg);
+        background-image : url(images/login_background.png);
         background-repeat : repeat-x;
         background-color : #fff;
         padding : 0px;