var movedownvar = null;
function movedown(id){
   if (movedownvar) clearTimeout(movedownvar)
   s=eval(id);
   s.scrollTop=s.scrollTop+2;
   movedownvar=setTimeout("movedown('"+id+"')",10)
}
function moveup(id){
   if (movedownvar) clearTimeout(movedownvar)
   s=eval(id);
   s.scrollTop=s.scrollTop-2;
   movedownvar=setTimeout("moveup('"+id+"')",10)
}
function stopmove(id){
   if (movedownvar) clearTimeout(movedownvar)
}