Okey, so please add inside: 
gk_restaurant\layouts\default.php  like you were doing in HTML times.
Because this plugin insert this inside  <script type="text/javascript"> - so it was wrong...
I will help you, when you will 
find this part of code- Code: Select all
     <?php $this->layout->loadBlock('head'); ?>
   <?php $this->layout->loadBlock('cookielaw'); ?>
</head>
Add mine here:- Code: Select all
     <?php $this->layout->loadBlock('head'); ?>
   <?php $this->layout->loadBlock('cookielaw'); ?>
<!--[if IE]>
<style type="text/css">
.gkMenu > ul { margin:-164px 30px 0px 0px !important; width:260px !important;z-index:99999; }
</style>
<![endif]-->
</head>
I forgot this template have it's own styles for IE but only for old versions of IE...