hi meena,
     u wud like to have a javascript
external to that of the html file
 thad wud call the link inside it
that is specify<script src=3D"name.js">
</script>link it call the function of the javascript so that ur source is
 safe
to a extent
   regards 

 tonyangelo
(india)
if ur really having some problems please do send me the code
and what is the factro u want to consider