<!--
// JavaScript Document
function tabOver(tab)
{
	if (document.getElementsByTagName&&document.getElementById)
	{
		resetElements(document.getElementsByTagName('div'));
		resetElements(document.getElementsByTagName('li'));
		document.getElementById('tab'+tab).className='active';
		document.getElementById('nav_level2_'+tab).className='active';
	}
}

function tabOut(tab)
{
	// do nothing
}

function resetElements(list)
{
	var num=list.length;
	for (var i=0;i<num;i++)
	{
		if (list[i].className=='active')
		{
			list[i].className='normal'
		}
	}
}

/* ******************** stylesheet switching *********************** */

function setActiveStyleSheet(title) {
   var i, a, main;
   for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
     if(a.getAttribute("rel").indexOf("style") != -1
        && a.getAttribute("title")) {
       a.disabled = true;
       if(a.getAttribute("title") == title) a.disabled = false;
     }
   }
}

function getActiveStyleSheet() {
var i, a;
 for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
  if(a.getAttribute("rel").indexOf("style") != -1
  && a.getAttribute("title")
  && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

function validatebookingform(ref)
{
	var err='';
	if (!ref.firstname.value)
	{
		err+='\n- your first name';
	}
	if (!ref.surname.value)
	{
		err+='\n- your surname';
	}
	if (!ref.housenamenumber.value)
	{
		err+='\n- your house name/number';
	}
	if (!ref.street.value)
	{
		err+='\n- your street';
	}
	if (!ref.towncity.value)
	{
		err+='\n- your town/city';
	}
	if (!ref.county.value)
	{
		err+='\n- your county';
	}
	if (!ref.postcode.value)
	{
		err+='\n- your post code';
	}
	if (!ref.telephone.value)
	{
		err+='\n- your telephone number';
	}
	if (!ref.email.value)
	{
		err+='\n- your email address';
	}
	if (!ref.readtandcs.checked)
	{
		err+='\n- your acceptance of the terms and conditions';
	}
	if (!ref.cardname.value)
	{
		err+='\n- the name on your card';
	}
	if (!ref.cardnumber.value)
	{
		err+='\n- the card number';
	}
	if (!ref.bookingoriginid.value)
	{
		err+='\n- how did you hear about the show';
	}
	if (err)
	{
		alert('To continue, please provide the following information:\n'+err+'\n\nThank you.');
		return false;
	}
	else
	{
		return true;
	}
}

/* RA. 27112007. Background music functionality added */ 
function musicOff() {
document.onoff.midi.Stop();
}function musicOn() {
document.onoff.midi.Play();
}


function changeButton() {
if (document.forms.onoff.B1.value=='music off') {
document.forms.onoff.B1.value='music on';
musicOff()
}
else {
document.forms.onoff.B1.value='music off';
musicOn()
}
}
//-->