Sub Menu Not displaying on Remote server Using Menu and Web.Sitemap

I have used menu with web.sitemap similar which  have used in Timetracker starter kit keeping main Node Url blank for every sub menu.
all first urls are blank so that no hover, only sub menu can redirect.

It is working perfectly on local machine but not showing sub menu on server while main Node changes along with differant roles.

Below is web.sitemap and Menu
------

















-----------------------

MaximumDynamicDisplayLevels="2" DataSourceID="sitemapDS" StaticMenuItemStyle-ItemSpacing="0px"
ItemWrap="true" StaticEnableDefaultPopOutImage="false" />
------------------------