Where to place code in PR/PM for onclick event of anchor tag <a>

Hi,

I'm trying to provide print option in a popup applet to print only value from specific field which is CLOB. So I have enclosed the field in a <div id='prnArea'></div> and placed an anchor tag <a id='prn' href=# onclick='printDiv('prnArea')'> and the function is defined in a script tag as below.

<script>

function printDiv(divName)

{

var mywindow = window.open('', 'PRINT', 'height=400,width=600);

mywindow.document.write(document.getElementById(divName).innerHTML);

mywindow.document.close();

mywindow.focus();

mywindow.print();

mywindow.close();

return true;}</script>

I've put above code in calculated field but Siebel is stripping the code in the <script> tag. Looks like I have to move the function to PR/PM.