title: modifying url when using script manager history property
body: <p>i think this type of questions already asked before and the solutions suggest that you should use <code>Windows.location.hash</code>
  but i dont know at what instance of program i have to do this while adding the history point or in the navigate event of script manager(i mean calling javascript function from code behind)
  Some people suggest that we have to modify the MicrosoftAjax.js file can you please suggest me something</p>