if(parent.document.getElementsByTagName("iframe")[0]) {
	parent.document.getElementsByTagName("iframe")[0].setAttribute('style', 'height: 800px !important');
}

var margin = {top: 20, right: 0, bottom: 25, left: 0},
	width = 1420,
	height = 775 - margin.bottom,
    formatNumber = d3.format(".2s"),
    transitioning,
    headerHeight = 20,
    headerColor = "#555555";

var x = d3.scale.linear()
		  .domain([0, width])
		  .range([0, width]);

var y = d3.scale.linear()
		  .domain([0, height])
          .range([0, height]);

// Create a Tree Layout
var treemap = d3.layout.treemap()
//.ratio(height / width * 0.5 * (1 + Math.sqrt(1)))
.round(false)
//.children(function(d, depth) { return depth ? null : d.children; });
.sort(function(a, b) { return a.value - b.value; });

// Create the image container / canvas 
var svg = d3.select("#chart")
.append("svg")
.attr("width", width ) //+ margin.left + margin.right)
.attr("height", height + margin.bottom + margin.top)
.style("margin-left", -margin.left + "px")
//.style("margin.right", -margin.right + "px")
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.style("shape-rendering", "crispEdges")

var data_colorScale;

function colorcode(colorScale) {
	data_colorScale = colorScale;
}

// Append header container in the svg container 
var grandparent = svg.append("g")
					.attr("class", "grandparent");

// Create header area
grandparent.append("rect")
			.attr("y", -margin.top)
			.attr("width", width)
			.attr("height", margin.top);

// Add Header Text 
grandparent.append("text")
			.attr("x", 6)
			.attr("y", 6 - margin.top)
			.attr("dy", ".75em");

// Initialize the root node dimensions
function initialize(root) {
	root.x = root.y = 0;
	root.dx = width;
	root.dy = height;
	root.depth = 0;
}

//Aggregate the values for internal nodes. This is normally done by the
//treemap layout, but not here because of the custom implementation.
function accumulate(d) {
	return d.children
	? d.value = d.children.reduce(function(p, v) { return p + accumulate(v); }, 0)
	: d.value;
}

// Creates the layout 
// Defines how the nodes needs to be displayed in the svg
function layout(d) {
	if (d.children) {
		treemap.nodes({children: d.children});
		d.children.forEach(function(c) {
			c.x = d.x + c.x * d.dx;
			c.y = d.y + c.y * d.dy;
			c.dx *= d.dx;
			c.dy *= d.dy;
			c.parent = d;
			layout(c);
		});
	}
}

/* display shows the treemap and writes the embedded transition function */
function display(d) {
	
	var legend = svg.selectAll(".legend")
	.data(data_colorScale.domain().slice())
	.enter()
	.append("g")
	.attr("class", "legend")
//			.attr("transform", function (d, i) { return "translate(0," + i * 20 + ")"; });
	.attr("transform", function (d, i) { return "translate(" + i * 150 + ",0)"; });
	
// create grandparent bar at top 
	grandparent
		.datum(d.parent)
		.on("click", transition)
		.select("text")
		.text(name(d));

	var g1 = svg.insert("g", ".grandparent");
	//	.datum(d)
	//	.attr("class", "depth");
	
// add in data 
	var g = g1.selectAll("g")
		.data(d.children)
		.enter()
			.append("g");
		//	.call(rect);

	
// write parent rectangle 
	g.append("rect")
		.attr("class", "parent")
		// Call the rectangle function to assign dimensions to the rectangle
		.call(rect)
		.attr("fill", function(d) {  return data_colorScale(d.value)});
/*		.append("title")
		.text(function(d) { return d.name + " " + formatNumber(d.value); });
*/
	legend.append("rect")
			.attr("x", 0)
			.attr("y", height + 5)
			.attr("width", 180)
			.attr("height", 100)
			.style("fill", data_colorScale);
	
	legend.append("text")
	.attr("x", 125)
	.attr("y", height)  
	.attr("dy", "1.80em")
    .attr("stroke","black")
	.style("text-anchor", "end")
	.text(function (d){ return d; });

// write children rectangles 
g.selectAll(".child")
	.data(function(d) { return d.children || [d]; })
	//.data(function(d) { return d; })
	.enter()
		.append("rect")
	// Highlights the children	
		.attr("class", "child")
	// Call the rectangle function to assign dimensions to the rectangle	
		.call(rect);
//		.append("title")
//		.transition()
/*
		.append("text")
			.attr("x", 125)//function(d) { return x(d.x) / 2 ; })
	 		.attr("y", height)//function(d) { return y(d.y) / 2 ; })
	 		.attr("dx", "10.35em")
			.attr("dy", "10.80em")
		    .attr("stroke","white")
		//    .each(wordwrap)
		//	.style("font-size","18px")
			.style("text-anchor", "middle")
			.text("Test text for children ");  //function(d) { return d.name }) // return d.name + " " + formatNumber(d.value); })
*/	 
g.append("text")
.attr("x", function(d) { return x(d.x) / 2 ; })
.attr("y", function(d) { return y(d.y) / 2 ; })
.attr("dy", "1.80em")
.attr("stroke","white")
.style("text-anchor", "end")
.text(function (d,i,j){ return d.children[i];}); //.children[i].children[j].name; });

/*	
// transition on child click 
	g.filter(function(d) { return d.children; })
		.classed("children", true)
		.on("click", transition);

	var g2 = display(d),
		t2 = g2.transition().duration(200);
	
	t2.selectAll("text").call(text).style("fill-opacity", 1);
	t2.selectAll("rect").call(rect_transition);
	t2.selectAll(".textdiv").style("display", "block"); 
	t2.selectAll(".foreignobj").call(foreign); 
*/
	
/*
// Adding a foreign object instead of a text object, allows for text wrapping 
	g.append("foreignObject")
	//	.data(function(d) { return d.children || [d]; })
	//	.display(d)
	//	.call(rect)
		.attr("class","foreignobj")
		.append("xhtml:div") 
// Display Parent / Child name + Net Sales Value 

		.html(function(d,i) { 
			if (d.value > 0 && typeof(d.value) !== "undefined") {
				return d.children[i].name + " (" + formatNumber(d.children[i].value) + ")";// +  " (" + formatNumber(d.value) + ")"; 
			//	return d.name + " (" + formatNumber(d.value) + ")";
			}
		}) ;
// Assign style to the added text
		.attr("class","textdiv");  //textdiv class allows us to style the text easily with CSS
*/

// create transition function for transitions 
	function transition(d) {
		if (transitioning || !d) return;
	//	if ( !d ) return;
		transitioning = true;
//		var g2 = display(d);
//			t1 = g1.transition().duration(750),
//		    t2 = g2.transition().duration(750);
// Update the domain only after entering new elements.
//		x.domain([d.x, d.x + d.dx]);
//		y.domain([d.y, d.y + d.dy]);

// Enable anti-aliasing during the transition.
		//svg.style("shape-rendering", null);

		// Draw child nodes on top of parent nodes.
//		svg.selectAll(".depth").sort(function(a, b) { return a.depth - b.depth; });
		// Fade-in entering text.
//		g2.selectAll("text").style("fill-opacity", 0);
//		g2.selectAll("foreignObject div").style("display", "none"); /*added*/

// Transition to the new view.
//		t1.selectAll("text").call(text).style("fill-opacity", 0);
//		t2.selectAll("text").call(text).style("fill-opacity", 1);
//		t1.selectAll("rect").call(rect_transition);
//		t2.selectAll("rect").call(rect_transition);

//		t1.selectAll(".textdiv").style("display", "none"); /* added */
//		t1.selectAll(".foreignobj").call(foreign); /* added */
//		t2.selectAll(".textdiv").style("display", "block"); /* added */
//		t2.selectAll(".foreignobj").call(foreign); /* added */ 

		// Remove the old node when the transition is finished.
//		t1.remove().each("end", function() {
//			svg.style("shape-rendering", "crispEdges");
//			transitioning = false;
//		});
		

	}//endfunc transition

	return g;
}//endfunc display

// This function defines the placements of text within each parent/child 
function text(text) {
	text.attr("x", function(d) { return x(d.x) + 6; })
	    .attr("y", function(d) { return y(d.y) + 6; });
}

//This function defines the placements of rectangles for each parent/child 
function rect(rect) {
	rect.attr("x", function(d) { return x(d.x); })
 		.attr("y", function(d) { return y(d.y); })
		.attr("width", function(d) { return x(d.x + d.dx)  - x(d.x); })
		.attr("height", function(d) { return y(d.y + d.dy) - y(d.y); })
	//    .attr("fill", function(d) {  return data_colorScale(d.name)})
		.style("fill", function(d) { 
            return d.parent ? data_colorScale(d.parent.name) : null; 
          })
		.attr("stroke","white");
}

//This function defines the placements of rectangles for each parent/child 
function rect_transition(rect) {
	rect.attr("x", function(d) { return x(d.x); })
 		.attr("y", function(d) { return y(d.y); })
		.attr("width", function(d) { return x(d.x + d.dx)  - x(d.x); })
		.attr("height", function(d) { return y(d.y + d.dy) - y(d.y); })
        .style("fill", function(d) { 
            return d.children ? data_colorScale(d.parent.name) : "lightblue" ; 
        	})
		.attr("stroke","white");
}


function foreign(foreign){ /* added */
	foreign.attr("x", function(d) { return x(d.x); })
		.attr("y", function(d) { return y(d.y); })
		.attr("width", function(d) { return x(d.x + d.dx) - x(d.x); })
		.attr("height", function(d) { return y(d.y + d.dy) - y(d.y); });
}

// This function is used to prepare the text at the header of the treemap
function name(d) {
	return d.parent ? name(d.parent) + "." + d.name : d.name;
}

function loadData(root) {
	initialize(root);
	accumulate(root);
	layout(root);
	display(root);
}