does masterpage know page being displayed?


when i navigate website utilizing masterpages, does concentration know page i am on? so, does store an vigilant i access?



the reason i am seeking i reinstate this:



//masterpage 
<div id="nav_main">
   <ul><asp:contentplaceholder id="navigation" runat="server">                    
   </asp:contentplaceholder></ul>
</div>

//content page(s)
<asp:content contentplaceholderid="navigation" id="thenav" runat="server">
   <li><a href="default.aspx">home</a></li>
   <li id="current"><a href="faq.aspx">faq</a></li>
   <li><a href="videos.aspx">videos</a></li>
   <li><a href="#">button 4</a></li>
   <li><a href="#">button 5</a></li>
</asp:content>


with some-more glorious fortitude navigation, highlights couple page carrying list item's id set "current". now any page recreates navigation the particular link's id set current.



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