Hiding a Writing a style specifically for Internet explorer IE 6 ,7, 8
Add this code to header tag
<!--[if IE 6]>
<style>#dl-menu{display: none;}</style>
<![endif]-->
<!--[if IE 7]>
<style>#dl-menu{display: none;}</style>
<![endif]-->
<!--[if IE 8]>
<style>#dl-menu{display: none;}</style>
<![endif]-->