function ChangeSubject(number) {
	switch (document.form1.subject.value){
	  case "7":  
      if (document.getElementById && document.body.style) {
	   document.getElementById("bookingref").style.display = "";
   	  }
      else if (document.all) {
	  	document.getElementById("bookingref").style.display = "";
         }
      break;
	  default:    // Anything else
      if (document.getElementById && document.body.style) {   
		document.getElementById("bookingref").style.display = "none";
   	  }         
      else if (document.all) {
		document.getElementById("bookingref").style.display = "none";
      }
      break;
   }
}
function reloadform() {
	document.form1.submit();
}