var delta = 0;	

			if(!(document.attachEvent)) {
				//for safari
				//window.onmousewheel = ieHandleWheel;
				//for firefox
				//window.addEventListener("DOMMouseScroll", handleWheel, false);
				//for booth
				window.addEventListener("keydown", keyDownHandlerFF, false);
				//alert('if');
			}
			else
			{
				//alert('else');
				// for msie
				//window.onmousewheel = document.onmousewheel = ieHandleWheel;
				window.onkeydown = document.onkeydown = keyDownHandlerIE;	
			}
			
			function keyDownHandlerIE(event)
			{
				var swf = document.getElementById("myAlternativeContent");
				var ev = window.event.keyCode;
				
				//if key is left arrow 
				if(ev == 37 || ev ==74)
				{
					//alert("sending negative number");
					//send a negative number
					swf.mouseWheelEvent(1);
				}
				
				//if key is right arrow 
				if(ev == 39 || ev ==75)
				{
					//alert("sending positive number");
					//send a positive number
					swf.mouseWheelEvent(-1);
				}
			}
			
			function keyDownHandlerFF(event)
			{
				var swf = document.getElementById("myAlternativeContent");
				var ev = event.keyCode;
				
				//alert("ev is " + ev);
				
				//if key is left arrow 
				if(ev == 37 || ev ==74)
				{
					//alert("left pressed");
					//alert("sending negative number");
					//send a negative number
					swf.mouseWheelEvent(1);
				}
				
				//if key is right arrow 
				if(ev == 39 || ev ==75)
				{
					//alert("left pressed");
					//send a positive number
					swf.mouseWheelEvent(-1);
				}
			}
			
			//this is for ie
			function ieHandleWheel(event)
			{
				var swf = document.getElementById("myAlternativeContent");
				delta = window.event.wheelDelta/-120;
				//alert(delta);
				swf.mouseWheelEvent(delta);
			}
			
			//this is for firefox
			function handleWheel(event) {
				var swf = document.getElementById("myAlternativeContent");
				delta = event.detail;
				//alert(delta);
				swf.mouseWheelEvent(delta);
			}