var lg,calk, nav="IE";
  function init()
  {
    if (navigator.appName=="Netscape")
      {
      var strChUserAgent = navigator.userAgent;
      if (strChUserAgent.indexOf("Navigator",0) > 1)
        nav="NE";
      else
        nav="Mod";
      }
    else
      {nav="IE";}
    bulle.style.visibility="hidden";
  }
  function Affiche(Evnt,Text,lg,col)
  {
    bulle.style.fontFamily="sans-serif";
    bulle.style.background=col;
    bulle.style.border='1px solid';
    bulle.style.width=Text.length*6;
    bulle.style.fontSize=10;
    if (nav=="Mod")
      {
      bulle.textContent=Text;
      var x = (document.all)? envent.x : Evnt.pageX;
      var y = (document.all)? envent.y : Evnt.pageY;
      bulle.style.left=x+document.body.scrollLeft;
      bulle.style.top=y+document.body.scrollTop+20-window.pageYOffset;
      bulle.style.visibility="visible";
      }
    else if (nav="IE")
      {
      bulle.style.left=event.x+document.body.scrollLeft;
      bulle.style.top=event.y+document.body.scrollTop+20;
      bulle.innerText=Text;
      bulle.style.visibility="visible";
      }
    else
      {
      calk=document.layers['bulle'];
      calk.document.open();
      calk.document.bgColor="#FF0000";
      calk.document.write('<font face="Verdana,Arial" size=1>'+Text+'</font>');
      calk.document.close();
      calk.top=Evnt.layerY+10;
      calk.left=Evnt.layerX+20;
      calk.visibility="show";
      }
  }
  function Efface()
  {
    if (nav=="NE")
    {
      calk.visibility="hide";
    }
    else
    {
      bulle.style.visibility="hidden";
    }
  }