var j,d="",l="",m="",p="",q="",z="",list2= new Array()

    list2[list2.length]='_img/_upload/topo/20090519154258_05.jpg';
    list2[list2.length]='_img/_upload/topo/20090930173929_msngsaensino3.jpg';
    list2[list2.length]='_img/_upload/topo/20090519154224_03.jpg';
    list2[list2.length]='_img/_upload/topo/01.jpg';
    list2[list2.length]='_img/_upload/topo/20090930172909_msngsaensino3.jpg';
    list2[list2.length]='_img/_upload/topo/20090519154242_04.jpg';
    list2[list2.length]='_img/_upload/topo/20090519154201_02.jpg';

   j=parseInt(Math.random()*list2.length);
   j=(isNaN(j))?0:j;
  
      document.write("<img name='Topo' src='"+list2[j]+"' border='0' width='300' height='155' />");
      
function Topo(t,l) {
  x=document.Topo;
  j=l;
  j++;
  if (j==list2.length) j=0;
  x.src=list2[j];
  setTimeout("Topo("+t+","+j+")",t);
  }