<?php
        //in IE11 you can't use the conditional comments as in older browsers
        //browscap must be enabled  and configured for get_browser to work
        //if not enabled we include the script anyway because the script has capabilities detections
        //WARNING if browscap is not setup make sure scripts are compatible with all the other browsers
        $is_IE=true;
        if (get_cfg_var('browscap')){
            $browser = get_browser();
            if($browser->browser != 'IE')
                $is_IE=false;
        }
        if($is_IE){
              echo '<script src="'.Yii::app()->theme->baseUrl.'/js/ie/dom4.js" cache="false"></script>';
        }
        ?>