var element = evt.target
                var chart = element.shadowTree

                var bar = chart.getElementById("bar0")
		var label = chart.getElementById("lab0")
		
		var data = element.getAttribute("data").split(";")

		for (var i = 1;i < data.length;i++)
		{	
		new_bar = bar.cloneNode("true")
		new_bar.setAttribute("id","bar" + i.toString())
 		chart.insertBefore(new_bar,chart.getElementById("x_axis"))
		new_label = label.cloneNode("true")
		new_label.setAttribute("id","lab" + i.toString())
 		chart.insertBefore(new_label,label)
		}

  		var x = 0, y = 0, width = 200, height = 100, i = 0, nb_rect = 0, data1 ="", fill1 = "", title_data = "";
		var nb_attributes = element.attributes.length, label_data = "";

		for (i = 0;i < nb_attributes;i++)
		{
		attribute = element.attributes.item(i)
		switch(attribute.name)
			{case "x" : x = attribute.value - 0 ; break;
			 case "y" : y = attribute.value - 0 ; break;
			 case "width" : width = attribute.value - 0 ; break;
			 case "height" : height = attribute.value - 0 ; break;
			 case "data" : data1 = attribute.value; break;
			 case "filled" : fill1 = attribute.value; break;
			 case "title" : title_data = attribute.value; break;
			 case "label" : label_data = attribute.value; break;
			 case "onclick" : break;
			 case "onmousedown" : break;
			 case "onmousemove" : break;
			 case "onmouseup" : break;
			 case "onmousein" : break;
			 case "onmouseout" : break;
			 case "id" : break;
			 case "cursor" : break;
			}
		}

		var data = data1.split(";")
		nb_rect = parseInt(data.length)
		var fill = fill1.split(";")
		var lab = label_data.split(";")


		var min_data = data[0]
		var max_data = data[0]

		for (i = 1;i < nb_rect;i++)
		{
		 if (data[i] > max_data) max_data = data[i]
		 if (data[i] < min_data) min_data = data[i]
		}

        	var rect = chart.getElementById("rect0")
		rect.setAttributeNS(null,"x",x.toString())
		rect.setAttributeNS(null,"y",y.toString())
		rect.setAttributeNS(null,"width",width.toString())
		rect.setAttributeNS(null,"height",height.toString())
		rect.setAttributeNS(null,"fill",fill[0])

		var width_rect = parseInt((width - 50) / nb_rect)
		var k = parseFloat((height - 70) / max_data)

		for (i = 0;i < nb_rect;i++)
		{
		bar = chart.getElementById("bar" + i.toString())
		bar.setAttributeNS(null,"x",(x + 30 + width_rect * i).toString())
		bar.setAttributeNS(null,"y",(y + height - 30).toString())
		bar.setAttributeNS(null,"width",width_rect.toString())
		bar.setAttributeNS(null,"height",(data[i] * k).toString())
		bar.setAttributeNS(null,"fill",fill[i + 1])
		label = chart.getElementById("lab" + i.toString())
		label.setAttributeNS(null,"x",(x + 30 + width_rect / 2 + width_rect * i).toString())
		label.setAttributeNS(null,"y",(y + height - 10).toString())
		label.firstChild.data = lab[i]
		}
		
  	     	var axis = chart.getElementById("x_axis")
		axis.setAttributeNS(null,"d","M" + (x + 30).toString() + " " + (y + height - 30).toString() + "h" + (width - 40).toString())
						
  	     	axis = chart.getElementById("y_axis")
		axis.setAttributeNS(null,"d","M" + (x + 30).toString() + " " + (y + height - 30).toString() + "v" + (40 - height).toString())

		title = chart.getElementById("title")
		title.setAttribute("x",(x + width / 2).toString())
		title.setAttribute("y",(y + 20).toString())
		title.firstChild.data = title_data

		var ampli = Math.round(Math.log(max_data)/Math.LN10) - 1
		var step = Math.pow(10,ampli)

		string_d = "M" + (x + 30).toString() + " " + (y + height - 30).toString() +"h-5 "
		i = 1
                while (i * step * k< height - 30)
		{
			string_d += "M" + (x + 30).toString() + " " + (y + height - 30 - i * step * k).toString() +"h-5 "
			i ++
 		}

 	     	axis = chart.getElementById("y_units")
		axis.setAttributeNS(null,"d",string_d)
	
	     	axis = chart.getElementById("origin")
		axis.setAttributeNS(null,"x",(x + 25).toString())
		axis.setAttributeNS(null,"y",(y + height - 30).toString())

	     	axis = chart.getElementById("y_unit")
		axis.setAttributeNS(null,"x",(x + 25).toString())
		axis.setAttributeNS(null,"y",(y + height - 30 - step * k).toString())
		axis.firstChild.data = step.toString()		
		
	     	axis = chart.getElementById("y_max")
		axis.setAttributeNS(null,"x",(x + 25).toString())
		axis.setAttributeNS(null,"y",(y + height - 30 - step * k * (i - 1)).toString())
		axis.firstChild.data = (step * (i - 1 )).toString()