var h = document.getElementById('myImageIconMouse').style.height/2;
var w = document.getElementById('myImageIconMouse').style.width/2;

function iebody(){
                return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
                }

function mousefollower()
{

            

                
               
                
                var curX=event.clientX+iebody().scrollLeft;
                var curY=event.clientY+iebody().scrollTop;
                
                
 	x=event.x
	y=event.y
    document.getElementById('myImageIconMouse').style.left= curX+h
    document.getElementById('myImageIconMouse').style.top = curY-w 
}
document.onmousemove=mousefollower