function Show(pass) {
  var divs = document.getElementsByTagName('div');
  var objd = document.getElementsByTagName("div");
  for(i=0;i<divs.length;i++){
    if(divs[i].id == pass){
      divs[i].style.visibility = 'visible';
      divs[i].style.display = '';
    } else {
      if (divs[i].id.substring(0,4) == 'link') {
        divs[i].style.visibility = 'hidden';
        divs[i].style.display = 'none';
      }
    }
  }
}

function Hide(div) {
    var objd = document.getElementsByTagName("div");
    objd[div].style.visibility = 'hidden';
    objd[div].style.display = 'none';
}