function checkFrame()
   {
    if(parent == self)
      location.href="../salticidae.php";
   }
   
function checkFrameSet()
   {
    if(parent == self){
          var adres = new String(location.href);
          location.href='salticidae.php?adres='+adres.slice(adres.lastIndexOf('/')+1,adres.length);
      }
   }

function checkFrameIntro()
   {
    if(parent == self){
          var adres = new String(location.href);
          location.href='../salticidae.php?adres=introduction/'+adres.slice(adres.lastIndexOf('/')+1,adres.length);
      }
   }