Web Development

<script language="javascript" type="text/javascript"><br />
    <br />
 function CallWebMethod()<br />
    {            <br />
         TreStringheService.GetTreStringhe("0100012",Fill,ErrorHandler,TimeOutHandler);<br />
     }<br />
  <br />
    function TimeOutHandler(result)<br />
    {<br />
        alert("Timeout :" + result);<br />
    }<br />
<br />
    function ErrorHandler(result)<br />
    {<br />
        var msg=result.get_exceptionType() + "\r\n";<br />
        msg += result.get_message() + "\r\n";<br />
        msg += result.get_stackTrace();<br />
        alert(msg);<br />
    }<br />
  <br />
   function Fill(result)<br />
    {<br />
        var lblMsg=document.getElementById("lblMsg");<br />
        lblMsg.innerHTML = "TEST";<br />
    }<br />
   </script><br />
  <br />
   <input type="button" onclick="CallWebMethod()" title="CLICCAMI" /><br />
     <span id="lblMsg" style="font-weight: bold; color: red;"></span><br />
<br />
<br />

<input type="button" onclick="CallWebMethod('lblMsg')" title="CLICCAMI"/> <br />
<br />
  function CallWebMethod(elementID)<br />
    {            <br />
<br />
// but here? what i must write for passing the elementID string to the Fill function?<br />
         TreStringheService.GetTreStringhe("0100012",Fill,ErrorHandler,TimeOutHandler);<br />
     }<br />
<br />
// if i can passing a string to the Fill function i can do that<br />
<br />
<br />
<br />
  function Fill(?????)<br />
    {<br />
        var lblMsg=document.getElementById(elementID);<br />
        lblMsg.innerHTML = "TEST";<br />
    }