anchor.diff:  				activeClass: "droppable-active",
   				drop: function( event, ui ) {
   					var check = findElement(activeGraph, "characteristic", theText);
  -					if (check != undefined){
  +					if (check != null){
   						console.log("Characteristic already in active graph");
   						return;
   					}
  +					console.log("Characteristic not in active graph, making server call....");
   					chart.showLoading();
   					var theData = PatientModule.getPatientMeasurements({"characteristic":[theURI]}, getPatientDataCallback);
   				}// /drop
  
positive.code: 			for (var i=0; i < arr.length; i++)
  				if (arr[i][propName] == propValue)
  					return arr[i];
  			console.log(propValue + " not found in array");
  		}// /findElement
  		
  		function updateLegend(){
  			var lastItem = chart.series[series.length-1];
  			lastItem.options.showInLegend = true;
  			chart.legend.renderItem(lastItem);
  			chart.legend.render();
  		}// /updateLegend
  		
  		function graphPatientData(theData){
  			theSeries = parseToSeries(theData);
  
negative.code: 				}
  			});// /each
  			newSeries.data = seriesData;
  			if(findElement(activeGraph,"units",units) == null){
  				chart.addAxis({
  					title: {
  						text: units
  					}
  				});
  			}
  			activeGraph.push({
  				characteristic: newSeries.name,
  				units: units,
  