1. Create a JavaScript function called suppressJS()

    function suppressJS(){return true;}
    
  2. Then within the head tags add the following code

    window.onerror=suppressJS;
    
  3. Your complete code will look like this

    <script type="text/javascript">
     
    <!--
     
    function suppressJS(){return true;}
     
    window.onerror=suppressJS;
     
    //-->
     
    </script>