function clickclear(thisfield, defaulttext)
{
    if (thisfield.value == defaulttext) {
        thisfield.value = "";
    }
}

function clickrecall(thisfield, defaulttext)
{
    if (thisfield.value == "") {
        thisfield.value = defaulttext;
    }
}

function hyperlink(text) {
  var exp = /(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig;
  return text.replace(exp,"<a target='_new' href='$1'>$1</a>");
}