function mathJaxLabel(){
    //Adds a foreignObject to store mathJax Text, assumes data is a string formatted for mathJax
    // Refer to this for mathJax rerendering voodoo: view-source:http://cdn.mathjax.org/mathjax/latest/test/sample-dynamic.html   
    var height,
    width;

    function label(selection){        
        selection.each(function(data) {
            var container = d3.select(this),
            QUEUE = MathJax.Hub.queue;
            

            var fo = container.selectAll(".label").data(function(d){return [d]}),
            foEnter = fo.enter().append("foreignObject")
                .attr("class","label")
                .append("xhtml:body")          
                .attr("xmlns","http://www.w3.org/1999/xhtml")
                .append("xhtml:div")               
                .attr("class","holder")
                .append("xhtml:div")
                .attr("class","lines")
            forUpdate = d3.transition(fo).attr("height",height).attr("width",width),
            bUpdate = d3.transition(fo.selectAll("body")).style("height",height+"px").style("width",width+"px"),
            foExit = d3.transition(fo.exit()).remove();
            
            function toggleDisplay(selection){
                selection.each(function() {
                    var el = d3.select(this),
                    state = el.style("display")
                    el.style("display",function(){                    
                        return (state == "block")?"none":"block";})})};

            function updateMath(item,i){
                //Escape whitespace so that user doesn't have to
                var newtext = item.select(".input").property("value").split(" ").join("\\ "),
                math = MathJax.Hub.getAllJax(item.selectAll("div.div").node())[0],
                data = container.datum();               
                data[0][i] = "\\("+newtext+"\\)";
                QUEUE.Push(["Text",math,newtext],
                           function(){item.selectAll(".div,.input").call(toggleDisplay)});    
                container.datum(data);}

            //each line
            var nl = container.selectAll("body div.lines").selectAll("div.newline").data(function(d){return d}),
            nlEnter = nl.enter().append("xhtml:div")
                .attr("class","newline")
                .attr("align","center");            
            nlExit = nl.exit().remove();
            
            //mJax holder
            var mjax = nlEnter.append("xhtml:div")
                .attr("class","div")
                .attr("align","center")
                .style("display","none")
                .html(function(d){return d.split(" ").join("\\ ")})            
            ;
            
            //Input
            var inpt = nlEnter.append("xhtml:input")
                .attr("class","input")
                .style("display","none")
                .property("value",function(d){return d.slice(-(d.length -2),(d.length-2))});
            

            //Display math elements once initialized.
            QUEUE.Push(function () {                
                math = MathJax.Hub.getAllJax(container.selectAll("div.div")[0][0])[0];
                container.selectAll("div.div").style("display","block");
            });

            //Behaviours
            container.selectAll("div.newline")
                .on("dblclick",function(d,i){
                    var el = d3.select(this);
                    (el.select(".input").style("display") !== "none")?updateMath(el,i):el.selectAll(".div,.input").call(toggleDisplay)})
                .each(function(d,i){
                    var el = d3.select(this),
                    id = i;
                    el.selectAll(".input")
                        .on("change",function(){updateMath(el,id)})});

        });
    };

    label.width = function(_) {
        if (!arguments.length) return width;
        width = _;
        return label;
    };

    label.height = function(_) {
        if (!arguments.length) return height;
        height = _;
        return label;
    };

    return label;
}