function lade()
{
var ziel1 = "./net/index.html";
var ziel2 = "./ienet/index.html";
 {
  if(window.navigator.userAgent.indexOf("Netscape") > -1 || window.navigator.userAgent.indexOf("Firefox") > -1)
     {
      location.href = ziel1;
     }
      else
          {
           location.href = ziel2;
          }
  }
}