if(inputs[i].checked){

						for(var d in cur_data){

							if(cur_data[d].label == checkbox_key){

								new_data.push(cur_data[d]);

							}

						}			                

	    	        }

	                else{

		                //push dummy data to not hide the label

						new_data.push(getDummyData(checkbox_key));

			        }

		        }

		    	var new_options = YAHOO.lang.merge(plot_options, {

		            xaxis: { 

		  	      		min: cur_ranges.xaxis.from, 

		  	      		max: cur_ranges.xaxis.to,

		  	      		mode:"time",

		  	      		timeformat: "%d/%m",

		        	},

		    	});

		    	if (!new_data){

					new_data = [[0,1]];

				}

		    	// do the zooming

		       plot = YAHOO.widget.Flot(plotContainer, new_data, new_options);

		       plot.subscribe("plotselected", plotselected);

		       //resubscribe plothover

		       plot.subscribe("plothover", plothover);

		       // don't fire event on the overview to prevent eternal loop

		       overview.setSelection(cur_ranges, true);

		    }

			/**

		     * plot only selected items from overview

		     * @param ranges

		     * @returns

		     */

		    function plotselected(ranges,cur_data) {

			    //updates the data for new plot

	    		data = getDataAccordingToRanges(ranges);

	    		generateCheckboxes(data);

		    	var new_options = YAHOO.lang.merge(plot_options, {

		            xaxis: { 

		  	      		min: ranges.xaxis.from, 

		  	      		max: ranges.xaxis.to,

		  	      		mode:"time",

		  	      		timeformat: "%d/%m",

		        	},

		        	yaxis: { 

                        min: ranges.yaxis.from, 

                        max: ranges.yaxis.to,

                    },

		    	});

		    	// do the zooming

		        plot = YAHOO.widget.Flot(plotContainer, data, new_options);

		        plot.subscribe("plotselected", plotselected);

		        //resubscribe plothover

		        plot.subscribe("plothover", plothover);

		        // don't fire event on the overview to prevent eternal loop

		        overview.setSelection(ranges, true);

		        //resubscribe choiced

		        YAHOO.util.Event.on(choiceContainer.getElementsByTagName("input"), "click", plotchoiced, [data, ranges]);

		    }

		    var previousPoint = null;

			function plothover(o) {

		        var pos = o.pos;

		        var item = o.item;

		        //YAHOO.util.Dom.get("x").innerHTML = pos.x.toFixed(2);

		        //YAHOO.util.Dom.get("y").innerHTML = pos.y.toFixed(2);

		        if (item) {

		            if (previousPoint != item.datapoint) {

		                previousPoint = item.datapoint;

		                var tooltip = YAHOO.util.Dom.get("tooltip");

		                if(tooltip) {

		                	  tooltip.parentNode.removeChild(tooltip);

		                }

		                var x = item.datapoint.x.toFixed(2);

		                var y = item.datapoint.y.toFixed(2);

		                if (!item.series.label){