I am modifying existing legacy webpages(which i shouldn't modify existing parts but adding) and the webpage uses document.write to write certain html elements. when i use

<script type="text/javascript" language="javascript">
   var  v = document.getElementById('td_date_cal_0');
   alert(v);
</script>

v becomes null and when i create button and click

<input type="button" id="mnbutton" onclick="mnLoader();" value="Click Me!" />;
<script type="text/javascript" language="javascript" >
    function mnLoader() {
        var v = document.getElementById("td_date_cal_0");
        alert(v); 
    } <br />

</script>

Any idea, how to get the element without need of user action, such as clicking?

Thanks, Ebe