you cannot include a script
with both a src
and a text inside the block, so you need to include two different script
blocks. Also backslashes are not needed, so use this code instead
<!--[if lt IE 9]>
<script>
document.createElement('container');
document.createElement('header');
document.createElement('footer');
</script>
<script src="/javascript/modernzr.js"> </script>
<![endif]-->
Note: in HTML5 there's no a container
element (yet?) defined on the language specs: maybe you wanted to create a main
element instead.