HTML1506: Unexpected token <script>

To avoid this error in Internet Explorer, place the script at the end of the <body> tag:

 <body>
    
    // more
   
    <script>
    /********************************
    /TEMPLATE VARS
    /*******************************/
    var save_url = '';  
    var base_url = 'http://disalle.dev.activemls.com/';

    // more

    </script>
</body>
</html>

At first glance, it looks like you have you scripts after your closing HTML document.

Try:

</body>
<script>
/********************************
/TEMPLATE VARS
/*******************************/
var save_url = '';  
var base_url = 'http://disalle.dev.activemls.com/';
// More Stuff Here
</script>
</html>