sandbox javascript iframe banner loading

gistfile1.txt

<iframe id="bannerTopWide" src="about:blank" width="100%" height="100%" marginwidth=0 marginheight=0 scrolling=no frameborder=0>
</iframe>

<script type="text/javascript">
$(function() {

var content  = '<sc' + 'ript charset="UTF-8" src="//cdn.rollad.ru/rollad.js"' + '></' + 'script>'
+'<div><sc' + 'ript type="text/javascript">RRoller.load(10102030491929384);' + '</sc' + 'ript></div>';

var frDoc = $('#bannerTopWide')[0].contentWindow.document;
frDoc.write(content);
});
</script>