Html Condition With Cclientscript

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>  



There is not a direct way to do that (at current yii version) but check also these posts

I think the solution take place in the second post :)

Thank you KonApaz

try my extension