Intelligent iFrame

index.html

<iframe id="theGameFrame" src="about:blank" width="784" height="1000"></iframe>

<script type="text/javascript">
    (function () {
        "use strict";

        var hash, match,
            location = document.location.href,
            theFrame = document.getElementById('theGameFrame');

        if (location.indexOf('#') >= 0) {
            hash = location.slice(location.indexOf('#') + 1);
            match = /spiel=([a-z0-9]+)/i.exec(hash);

            if (match !== null) {
                theFrame.src = "http://tatort-plus.tatort.de/game/" + match[1];
                return true;
            }
        }

        theFrame.src = "http://tatort-plus.tatort.de/game";
        return false;
    }());
</script>