function ShowMenu(e,i){
    var msg = document.getElementById(i);
    var hided  = ( msg.style.display == "none" );
    if( document.all)    // IE
    {
      msg.style.top = document.documentElement.scrollTop + event.clientY ;
     msg.style.left = document.documentElement.scrollLeft + event.clientX ; 
       msg.style.display = "block";
    }
   else      // Firefox
   {
     // var evt = arguments[0];
      //alert(evt.clientY);
       e=e||event;    // 兼容性
     msg.style.top = document.documentElement.scrollTop + e.clientY + "px" ;
       msg.style.left = document.documentElement.scrollLeft + e.clientX + "px"; 
      msg.style.display = "table-row";
   }

}

function HiddenMenu(i)
{
 document.getElementById(i).style.display="none";
}