text: /*
  loadCSS: load a CSS file asynchronously.
  [c]2014 @scottjehl, Filament Group, Inc.
  Licensed MIT
  */
  function loadCSS( href, before, media, callback ){
  	"use strict";
  	// Arguments explained:
  	// `href` is the URL for your CSS file.
  	// `before` optionally defines the element we'll use as a reference for injecting our <link>
  	// By default, `before` uses the first <script> element in the page.
  	// However, since the order in which stylesheets are referenced matters, you might need a more specific location in your document.
  	// If so, pass a different reference element to the `before` argument and it'll insert before that instead
  	// note: `insertBefore` is used instead of `appendChild`, for safety re: http://www.paulirish.com/2011/surefire-dom-element-insertion/
  	var ss = window.document.createElement( "link" );
  	var ref = before || window.document.getElementsByTagName( "script" )[ 0 ];
  	var sheets = window.document.styleSheets;
  	ss.rel = "stylesheet";
  	ss.href = href;
  	// temporarily, set media to something non-matching to ensure it'll fetch without blocking render
  	ss.media = "only x";
  	ss.onload = callback || function() {};
  	// inject link
  	ref.parentNode.insertBefore( ss, ref );
  	// This function sets the link's media back to `all` so that the stylesheet applies once it loads
  	// It is designed to poll until document.styleSheets includes the new sheet.
  	function toggleMedia(){
  		var defined;
  		for( var i = 0; i < sheets.length; i++ ){
  			if( sheets[ i ].href && sheets[ i ].href.indexOf( href ) > -1 ){
  				defined = true;
  			}
  		}
  		if( defined ){
  			ss.media = media || "all";
  		}
  		else {
  			setTimeout( toggleMedia );
  		}
  	}
  	toggleMedia();
  	return ss;
  }
  