用js描写对联广告．．．．

<DIV id=move_banner
style="Z-INDEX: 2; LEFT: 870px; VISIBILITY: visible; WIDTH: 111px; POSITION: absolute; TOP: 84px; HEIGHT: 72px">
<DIV id=Layer1
style="Z-INDEX: 1; LEFT: -892px; WIDTH: 111px; POSITION: absolute; TOP: 0px; HEIGHT: 115px">
<TABLE id=table1 style="BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0
width=110 border=0>
<TBODY>
<TR>
    <TD vAlign=top height=12>
      <DIV align=left><!--     <object class></embed>
      </object>
      </MARQUEE>
      </DIV></TD></TR></TBODY></TABLE>
</DIV>
<SCRIPT>
            set_y = 0;
            distance = 0;
            document.all['move_banner'].style.left = 898;

move_div();

function move_div()
            {
                    var new_y;
                    new_y = document.body.scrollTop;
                    distance = new_y - set_y ;
                    if( set_y != new_y ) set_y += ( distance / 10 );
                    document.all['move_banner'].style.top = set_y;
                    setInterval('move_div()');
            }
</SCRIPT>