Add static getter for splitter objects

skins/larry/ui.js

@@ -817,6 +817,7 @@ function rcube_splitter(p)
   this.callback = p.callback;
 
   var me = this;
+  rcube_splitter._instances[this.id] = me;
 
   this.init = function()
   {
@@ -1018,3 +1019,11 @@ function rcube_splitter(p)
 } // end class rcube_splitter
 
 
+// static getter for splitter instances
+rcube_splitter._instances = {};
+
+rcube_splitter.get_instance = function(id)
+{
+  return rcube_splitter._instances[id];
+};
+