How would it be posible to make the image link for Crafty Live Help static? I would like to have the link stay in one corner of the site even if the user scrolls the page.

I tried modifying
/www/www/includes/templates/classic/common/tpl_main_page.php, add a link and call a java script, but it didnt work well, I got script error (I dont have much experience with Java).

Does anybody have a ready made script or can help in any other way? Any help is much appreciated, thanks.