JavaScript/runMathJax.js

(function(document) {
    if ((typeof window.MathJax != 'undefined') && (typeof window.MathJax.Hub != 'undefined')) {

        // Apply MathJax typesetting
        var mathjaxDiv =
            document.getElementById(config.mathjaxProcessingElementId);

        // Apply Markdown parser after MathJax typesetting is complete
        window.MathJax.Hub.Queue(["Typeset", window.MathJax.Hub,
                                  mathjaxDiv]);

        window.MathJax.Hub.Register.StartupHook("End Typeset",
            function () {
                // BUG: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
                // 
                // FIXED: 
                config.markedOptions.sanitize = false;
                marked.setOptions(config.markedOptions);

                // Decode < and >
                mathjaxData = mathjaxDiv.innerHTML;
                mathjaxData = mathjaxData.replace(/&lt;/g, "<");
                mathjaxData = mathjaxData.replace(/&gt;/g, ">");

                // Convert Markdown to HTML and replace document body
                var html = marked(mathjaxData);
                document.body.innerHTML = html;

                // Remove div used for MathJax processing
                mathjaxDiv.remove();
            }
        );
    }
}(document));