private function clickHandler(event:MouseEvent): void
			{

							var valueOne: Number=parseFloat(firstValue.text);
							var valueTwo: Number=parseFloat(secondValue.text);
							var valueThree: Number= parseFloat(thirdValue.text);

							/*var stringValueOne: String=firstValue.text;
							var stringValueTwo: String=secondValue.text;
							var stringValueThree: String=thirdValue.text;

							var valueOne: Number=Number(stringValueOne);
							var valueTwo: Number=Number(stringValueTwo);
							var valueThree: Number=Number(stringValueThree);*/
				l
							var size: Number;
				  for (var i=0; i< size; i++) {

      				if(valueOne.charAt(i)!="" ){

        				if( valueOne.charAt(i) < "0" || valueOne.charAt(i) > "9") {

          					if( != "")
          						Alert.show("Please enter numbers only");

        				}

      				}

     			}





				if (valueOne || valueTwo || valueThree  )


					{
					Alert.show("Please enter numbers only");
					}
					else
					{

							var result:Number=Number(valueOne + valueTwo + valueThree)/3.0;

							average.text=result.toString();
						}
			}

		]]>