| 36 | } ); |
| 37 | |
| 38 | function loadScript( url, callback ) { |
| 39 | |
| 40 | var head = document.querySelector( 'head' ); |
| 41 | var script = document.createElement( 'script' ); |
| 42 | script.type = 'text/javascript'; |
| 43 | script.src = url; |
| 44 | |
| 45 | // Wrapper for callback to make sure it only fires once |
| 46 | var finish = function() { |
| 47 | if( typeof callback === 'function' ) { |
| 48 | callback.call(); |
| 49 | callback = null; |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | script.onload = finish; |
| 54 | |
| 55 | // IE |
| 56 | script.onreadystatechange = function() { |
| 57 | if ( this.readyState === 'loaded' ) { |
| 58 | finish(); |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | // Normal browsers |
| 63 | head.appendChild( script ); |
| 64 | |
| 65 | } |
| 66 | |
| 67 | })(); |