//<code>
return date('m/d/Y', strtotime("18 year ago"));
//</code>

<script type="text/javascript">
  function rsfp_onSelectDate(date, type, args, calendar)
{
var dates = args[0];
var date = dates[0];
var year = date[0], month = date[1], day = date[2];
 
var d = new Date(year, month-1, day);
if (d.getDay() == 0 || d.getDay() == 6) {
alert('Available only from Monday to Friday');
return false;
} else {
return true;
}
}
</script>

<script type="text/javascript">
  function rsfp_onSelectDate(date, type, args, calendar)
{
var dates = args[0];
var date = dates[0];
var year = date[0], month = date[1], day = date[2];
 
var d = new Date(year, month-1, day);
if (d.getDay() !== 6) {
alert('Please select Saturday!');
return false;
} else {
return true;
}
}
</script>