i want to give my visitors a cookie

<script type="text/javascript" src="js.js"></script>
<span onClick="writeCookie(0)">
<script language="javascript">
<!--

   link ('link here');


// -->

</script>
</span>

Code (markup):

that code will give a cookie if you click on the link.
what i want to do is give someone that cookie if they visit a certain page.(clicking anywhere on the page would be fine to)

 

<script type="text/javascript" src="js.js"></script>
<script language="javascript">
writeCookie(0);
<!--

link ('link here');


// -->

</script>
</span>