added 'fixed' property to background so that it does not scroll
diff --git a/public/js/startup.js b/public/js/startup.js
index 2d3e258..fe9507f 100644
--- a/public/js/startup.js
+++ b/public/js/startup.js
@@ -143,7 +143,8 @@
 }
 
 erpnext.set_user_background = function(src) {
-	set_style(repl('#body_div { background: url("files/%(src)s") repeat;}', {src:src}))
+	set_style(repl('#body_div { background: url("files/%(src)s") repeat fixed;}',
+		{src:src}))
 }
 
 // subject, sender, description