Conditional commented JavaScript in WordPress

conditional_js.php

<?php

/* Hook the HTML5 shiv into WP. */
add_action('wp_print_scripts', 'mytheme_ie_specific_js');

/**
 * Attaches conditionally commented JS file into wp_print_scripts hook.
 * 
 * A modified version of Peter Wilson's gist https://gist.github.com/1282923
 * 
 * @link https://gist.github.com/1282923
 */
function mytheme_ie_specific_js() { 
	if ( is_admin() )
		return;
		
	print( "<!--[if lt IE 9]>\n" );
	printf( '<script src="%s/assets/js/modernizr.min.js"></script>', get_template_directory_uri() );
	print( "\n<![endif]-->\n" );
}
?>