function clickclear(thisfield, defaulttext) {
  if (thisfield.value == defaulttext) {
    thisfield.value = "";
  }
}
function clickrecall(thisfield, defaulttext) {
  if (thisfield.value == "") {
    thisfield.value = defaulttext;
  }
}
function clickopen(defaulttext) {
  document.getElementById("Sbox").value = defaulttext;
}
function switchpage(select) {
  var index;
  for(index=0; index<select.options.length; index++)
  if(select.options[index].selected) {
    if(select.options[index].value!= "")
      window.location.href = select.options[index].value;
    break;
  }
}