respond.js & html5shiv.min.js where is the best place to use

respond.js & html5shiv.min.js where is the best place to use \\ সাধারনত আমরা js কে footer এ call করে থাকি | তবে respond.js & html5shiv.min.js header এ ব্যবহার করাই ভাল | এতে করে explorer(IE) তে ভাল result হবে |

sources==========>>>>>
http://pastebin.com/uUKpMpQp  // This is respond.js
http://pastebin.com/b1W102WJ  // This is html5shiv.min.js
/************************************************************************************************************************/
<!--[if IE]>
        <script src="<?php echo get_template_directory_uri();?>/js/respond.js"></script>
		<![endif]-->
		<!--[if lt IE 9]>
		<script src="<?php echo get_template_directory_uri();?>/js/html5shiv.min.js"></script>
		<script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
		<![endif]-->