function $(id) {
  obj = document.getElementById(id);
  return obj;
}

function changeFeature(divno) {
  for(i=1;i<=10;i++) {
    if(i == divno) {
      $('feature' + divno).style.display = '';
    } else {
      $('feature' + i).style.display = 'none';
    }
  }
}

function toggleTextBox(tb){
    if (tb.value == "Enter search term")
    {
        tb.value = ""
    }
    else if (tb.value == "")
    {
        tb.value = "Enter search term"
    }
}