rmalizeUrl</a> for possible URL formats.
Setting this property will enable the dynamic treeview loading.
When the page is displayed, the browser will request this URL with a GET parameter
named 'source' whose value is 'root'. The server script should then generate the
needed tree view data corresponding to the root of the tree (see <a href="/doc/api/1.0/CTreeView#saveDataAsJson">saveDataAsJson</a>.)
When a node has a CSS class 'hasChildren', then expanding this node will also
cause a dynamic loading of its 