URl redirection from Radwindow manager to a different page

[yishagerew]

I am using telerik radpanelbar and source from  a sitemap data source.When i give value to url in the sitemap,then the link is redirected to a page other that telerik radwindow manager.I tried to give the value of URl to empty and give  url value to the title attribute,It works and open in the radwindow but the title of the menu is also a link which is not good at all.
How can i open radpanel menus open in the rad window without redirection to its own page other than Radwindow manager?