function Show_Hide(code){
  var i;
  var osn = document.getElementById('osn');
  var hrf = document.getElementsByTagName('a');
    if(osn){   
   for (i= 0; i<hrf.length; i++){
    if (hrf[i].addEventListener){
        hrf[i].addEventListener("click", function(){osn.innerHTML += code;}, false);}   
      }
   }
}