var count = 10;
function ImgResize(Img)
{count = Counting(count);
	Resize(Img,count);
	return false;}

function Counting(count){   
        if (event.wheelDelta >= 120)
                count++;
        else if (event.wheelDelta <= -120)
                count--;   
   return count; 
}
function Resize(Img,count){
       Img.style.zoom = count + '0%';}