how to registerScriptFile with HTML condition in CClientScript, for example :
I want to add this line with CClientScript :
<!--[if lt IE 9]>
<script src="<?php echo $themeBaseUrl;?>/backend/assets/plugins/excanvas.min.js"></script>
<script src="<?php echo $themeBaseUrl;?>/backend/assets/plugins/respond.min.js"></script>
<![endif]-->