I would like to set a couple of session variables when I click an image on the page. The session variables will be equal to textboxes on the same page as the image: Here is the tag for the image.

<a onclick="window.open('../../Process.aspx','cal','width=490,height=420,left=500,top=180,scrollbars=no')"

href="javascript:;"><img alt="Process" src="../../images/register.gif" style="border-top-style: none; border-right-style: none; border-left-style: none; border-bottom-style: none" id="IMG1" onclick="return IMG1_onclick()" /></a>