document.onmousemove = function ()
{
if(__item" + this.ClientID + @" != null){
__item" + this.ClientID + @".style.left= window.event.clientX + document.body.scrollLeft + document.documentElement.scrollLeft ;
__item" + this.ClientID + @".style.top = window.event.clientY + document.body.scrollTop + document.documentElement.scrollTop ;
}
}