code uses jquery but if jquery gets loaded in footer then it won't work. Lets rewrite it in plain javascript
instead of hooking into wp_footer hook into wp_head.
most of this code is copied from wordpress internal browser check. reference /wp-admin/includes/dashboard.php / wp_check_browser_version for more information.
also give the warning some better styling use twitter bootstrap for inspiration.
there are several issues with this.
most of this code is copied from wordpress internal browser check. reference /wp-admin/includes/dashboard.php / wp_check_browser_version for more information.