You can use serverside variables to drive client-side javascripts. Server-side variables get processed and the results output by the time the page is rendered, so the value of the variable can be used in client-side functions.

In an ASP application I'm working with, I wanted a different tooltip to show up on each tab, depending on what the tab title was. There is a server-side variable called "tabs[i].title". So I created a little client-side function to test the value of the title on each tab.

 
<script>
var tabName ;

function whichTab(tabTitle){

   if (tabTitle == \'Summary\'){

   tabName = Summary;

}

else if (tabTitle == \'Plan Details\'){

   tabName = PlanDetails;

}

else if (tabTitle == \'Certifications\'){

   tabName = Certifications;

}

else if (tabTitle == \'Transcript\'){

  tabName = Transcript;

}

}

</script>

<td>
  <strong onMouseOver=\"whichTab(\'${quoteHTML(tabs[i].title)}\');this.T_STICKY=true;
this.T_WIDTH=400; this.T_TEMP=5500;return escape(tabName);\">${quoteHTML(tabs
[i].title)}</strong></td>

<td>    <a href=\"${href}\" onMouseOver=\"whichTab(\'${quoteHTML(tabs[i].title)}\');this.T_STICKY=true; this.T_WIDTH=300; this.T_TEMP=5500;return escape(tabName);\">${quoteHTML(tabs[i].title)}</a> </td>