curr1='curr3';
  curr2='curr3';
  
  function show(z,x) {
  
  }
  function oldshow() {
  hide(curr2);
  if (x==1) {
  hide(curr1);
  curr1=z;
   } else {
  curr2=z;
  }
  document.getElementById(z).style.visibility="visible";
  window.clearTimeout(msto);
  }
  
  function hide(q) {
  document.getElementById(q).style.visibility="hidden";
  }
  
  function info(q) {
  hide(curr1);
  hide(curr2);
  document.getElementById('if1').style.visibility="visible";
  document.getElementById('if2').src= q + ".html";
  }
  msto=window.setTimeout("show('curr3','1')",1);
  function sto()  {
  window.clearTimeout(msto);
  msto=window.setTimeout("hide('dogdiv');hide('catdiv');show('curr3','1')",400);
  }