var r_validDigits = /^([0-9]+)$/
var r_validNumber = /^([-+]?([0-9]*\.)?[0-9]+)$/
var r_validChars = /^([0-9A-Za-z]+)$/
var r_validEmail = /^([0-9a-zA-Z]+[-._+&])*[0-9a-zA-Z]+@([-0-9a-zA-Z]+[.])+[a-zA-Z]{2,6}$/
//var r_validDate = /^(?=\d)(?:(?:31(?!.(?:0?[469]|11))|(?:30|29)(?!.0?2)|29(?=.0?2.(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))|(?:2[0-8]|1\d|0?[1-9]))([-./])(?:1[012]|0?[1-9])\1(?:1[6-9]|[2-9]\d)?\d\d)?(\x20?((0?[1-9]|1[012])(:[0-5]\d){0,2}(\x20[AP]M))|([01]\d|2[0-3])(:0-5]\d){1,2})?$/
                      
function popup(s,x,y) {
  window.open(s, 'popup'+x, 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=1,width='+x+',height='+y);
}

var show_menu_curr = '';
function show_menu_On(x) {
    t = document.getElementById('show_menu_'+x);
    if(t) t.className = 'show_menu show_menu_on';
}
function show_menu_Off(x) {
  if(x!=show_menu_curr) {
    t = document.getElementById('show_menu_'+x);
    if(t) t.className = 'show_menu show_menu_off';
  }
}
function show_menu_Set(x) {
  show_menu_curr = x;
  show_menu_On(x);
}

var show_series_menu_curr = '';
function show_series_menu_On(x) {
  t = document.getElementById('show_series_menu_'+x);
  if(t) t.className = 'show_series_menu show_series_menu_on';
}
function show_series_menu_Off(x) {
  if(x!=show_series_menu_curr) {
    t = document.getElementById('show_series_menu_'+x);
    if(t) t.className = 'show_series_menu show_series_menu_off';
  }
}
function show_series_menu_Set(x) {
  show_series_menu_curr = x;
  show_series_menu_On(x);
}

var show_browse_menu_curr = '';
function show_browse_menu_On(x) {
  t = document.getElementById('show_browse_menu_'+x);
  if(t) t.className = 'show_series_menu show_series_menu_on';
}
function show_browse_menu_Off(x) {
  if(x!=show_browse_menu_curr) {
    t = document.getElementById('show_browse_menu_'+x);
    if(t) t.className = 'show_series_menu show_series_menu_off';
  }
}
function show_browse_menu_Set(x) {
  show_browse_menu_curr = x;
  show_browse_menu_On(x);
}

function conf(s) {
  if(confirm('Are you sure?')) {
    window.open(s,'_self');
  }
}

function checkImages() {
  for(i=0;i<document.images.length;i++) {
    if(!document.images[i].complete) document.images[i].src='/images/comingsoon.jpg';
  }
}

function valid_TicketRequest(f) {
  for(i=0;i<f.elements.length;i++) {
    f.elements[i].optional=true;
  }
  f.elements['name'].optional=false;
  f.elements['daytime_telephone'].optional=false;
  f.elements['evening_telephone'].optional=false;
  f.elements['email'].optional=false;
  f.elements['address1'].optional=false;
  f.elements['address2'].optional=false;
  f.elements['address3'].optional=false;
  f.elements['postcode'].optional=false;
  f.elements['num_tickets'].optional=false;
  for(i=0;i<f.elements.length;i++) {
    if(!f.elements[i].optional&f.elements[i].value=='') {
      alert('Please fill in all required fields.');
      f.elements[i].focus();
      return;
    }
  }
  f.submit();
}

function valid_Contact(f) {
  for(i=0;i<f.elements.length;i++) {
    f.elements[i].optional=true;
  }
  f.elements['cont_name'].optional=false;
  f.elements['cont_email'].optional=false;
  f.elements['cont_desc'].optional=false;
  for(i=0;i<f.elements.length;i++) {
    if(!f.elements[i].optional&f.elements[i].value=='') {
      alert('Please fill in all required fields.');
      f.elements[i].focus();
      return;
    }
  }
  f.submit();
}

function valid_CommentPost(f) {
  for(i=0;i<f.elements.length;i++) {
    f.elements[i].optional=true;
  }
  f.elements['comm_name'].optional=false;
  f.elements['comm_email'].optional=false;
  f.elements['comm_location'].optional=false;
  f.elements['comm_desc'].optional=false;
  for(i=0;i<f.elements.length;i++) {
    if(!f.elements[i].optional&f.elements[i].value=='') {
      alert('Please fill in all required fields.');
      f.elements[i].focus();
      return;
    }
  }
  f.submit();
}



////////////////////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////

/*

Name: jsDate
Desc: VBScript native Date functions emulated for Javascript
Author: Rob Eberhardt, Slingshot Solutions - http://slingfive.com/
History:
	2005-08-04	v0.94		scrapped new dateDiff approach to better match VBScript's simplistic Y/M/Q
	2005-08-03	v0.93		fixed dateDiff/leapyear bug with yyyy/m/q intervals
	2004-11-26	v0.91		fixed datePart/ww bug, added weekdayName() & monthName()
	2004-08-30	v0.9		brand new
	
*/

// used by dateAdd, dateDiff, datePart, weekdayName, and monthName
// note: less strict than VBScript's isDate, since JS allows invalid dates to overflow (e.g. Jan 32 transparently becomes Feb 1)
function isDate(p_Expression){
	return !isNaN(new Date(p_Expression));		// <<--- this needs checking
}


// REQUIRES: isDate()
function dateAdd(p_Interval, p_Number, p_Date){
	if(!isDate(p_Date)){return "invalid date: '" + p_Date + "'";}
	if(isNaN(p_Number)){return "invalid number: '" + p_Number + "'";}	

	p_Number = new Number(p_Number);
	var dt = new Date(p_Date);
	switch(p_Interval.toLowerCase()){
		case "yyyy": {// year
			dt.setFullYear(dt.getFullYear() + p_Number);
			break;
		}
		case "q": {		// quarter
			dt.setMonth(dt.getMonth() + (p_Number*3));
			break;
		}
		case "m": {		// month
			dt.setMonth(dt.getMonth() + p_Number);
			break;
		}
		case "y":		// day of year
		case "d":		// day
		case "w": {		// weekday
			dt.setDate(dt.getDate() + p_Number);
			break;
		}
		case "ww": {	// week of year
			dt.setDate(dt.getDate() + (p_Number*7));
			break;
		}
		case "h": {		// hour
			dt.setHours(dt.getHours() + p_Number);
			break;
		}
		case "n": {		// minute
			dt.setMinutes(dt.getMinutes() + p_Number);
			break;
		}
		case "s": {		// second
			dt.setSeconds(dt.getSeconds() + p_Number);
			break;
		}
		case "ms": {		// second
			dt.setMilliseconds(dt.getMilliseconds() + p_Number);
			break;
		}
		default: {
			return "invalid interval: '" + p_Interval + "'";
		}
	}
	return dt;
}



// REQUIRES: isDate()
// NOT SUPPORTED: firstdayofweek and firstweekofyear (defaults for both)
function dateDiff(p_Interval, p_Date1, p_Date2, p_firstdayofweek, p_firstweekofyear){
	if(!isDate(p_Date1)){return "invalid date: '" + p_Date1 + "'";}
	if(!isDate(p_Date2)){return "invalid date: '" + p_Date2 + "'";}
	var dt1 = new Date(p_Date1);
	var dt2 = new Date(p_Date2);

	// get ms between dates (UTC) and make into "difference" date
	var iDiffMS = dt2.valueOf() - dt1.valueOf();
	var dtDiff = new Date(iDiffMS);

	// calc various diffs
	var nYears  = dt2.getUTCFullYear() - dt1.getUTCFullYear();
	var nMonths = dt2.getUTCMonth() - dt1.getUTCMonth() + (nYears!=0 ? nYears*12 : 0);
	var nQuarters = parseInt(nMonths/3);	//<<-- different than VBScript, which watches rollover not completion
	
	var nMilliseconds = iDiffMS;
	var nSeconds = parseInt(iDiffMS/1000);
	var nMinutes = parseInt(nSeconds/60);
	var nHours = parseInt(nMinutes/60);
	var nDays  = parseInt(nHours/24);
	var nWeeks = parseInt(nDays/7);


	// return requested difference
	var iDiff = 0;		
	switch(p_Interval.toLowerCase()){
		case "yyyy": return nYears;
		case "q": return nQuarters;
		case "m": return nMonths;
		case "y": 		// day of year
		case "d": return nDays;
		case "w": return nDays;
		case "ww":return nWeeks;		// week of year	// <-- inaccurate, WW should count calendar weeks (# of sundays) between
		case "h": return nHours;
		case "n": return nMinutes;
		case "s": return nSeconds;
		case "ms":return nMilliseconds;	// millisecond	// <-- extension for JS, NOT available in VBScript
		default: return "invalid interval: '" + p_Interval + "'";
	}
}



// REQUIRES: isDate(), dateDiff()
// NOT SUPPORTED: firstdayofweek and firstweekofyear (does system default for both)
function datePart(p_Interval, p_Date, p_firstdayofweek, p_firstweekofyear){
	if(!isDate(p_Date)){return "invalid date: '" + p_Date + "'";}

	var dtPart = new Date(p_Date);
	switch(p_Interval.toLowerCase()){
		case "yyyy": return dtPart.getFullYear();
		case "q": return parseInt(dtPart.getMonth()/3)+1;
		case "m": return dtPart.getMonth()+1;
		case "y": return dateDiff("y", "1/1/" + dtPart.getFullYear(), dtPart);			// day of year
		case "d": return dtPart.getDate();
		case "w": return dtPart.getDay();	// weekday
		case "ww":return dateDiff("ww", "1/1/" + dtPart.getFullYear(), dtPart);		// week of year
		case "h": return dtPart.getHours();
		case "n": return dtPart.getMinutes();
		case "s": return dtPart.getSeconds();
		case "ms":return dtPart.getMilliseconds();	// millisecond	// <-- extension for JS, NOT available in VBScript
		default: return "invalid interval: '" + p_Interval + "'";
	}
}


// REQUIRES: isDate()
// NOT SUPPORTED: firstdayofweek (does system default)
function weekdayName(p_Date, p_abbreviate){
	if(!isDate(p_Date)){return "invalid date: '" + p_Date + "'";}
	var dt = new Date(p_Date);
	var retVal = dt.toString().split(' ')[0];
	var retVal = Array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday')[dt.getDay()];
	if(p_abbreviate==true){retVal = retVal.substring(0, 3)}	// abbr to 1st 3 chars
	return retVal;
}
// REQUIRES: isDate()
function monthName(p_Date, p_abbreviate){
	if(!isDate(p_Date)){return "invalid date: '" + p_Date + "'";}
	var dt = new Date(p_Date);	
	var retVal = Array('January','February','March','April','May','June','July','August','September','October','November','December')[dt.getMonth()];
	if(p_abbreviate==true){retVal = retVal.substring(0, 3)}	// abbr to 1st 3 chars
	return retVal;
}









// ====================================

// bootstrap different capitalizations
function IsDate(p_Expression){
	return isDate(p_Expression);
}
function DateAdd(p_Interval, p_Number, p_Date){
	return dateAdd(p_Interval, p_Number, p_Date);
}
function DateDiff(p_interval, p_date1, p_date2, p_firstdayofweek, p_firstweekofyear){
	return dateDiff(p_interval, p_date1, p_date2, p_firstdayofweek, p_firstweekofyear);
}
function DatePart(p_Interval, p_Date, p_firstdayofweek, p_firstweekofyear){
	return datePart(p_Interval, p_Date, p_firstdayofweek, p_firstweekofyear);
}
function WeekdayName(p_Date){
	return weekdayName(p_Date);
}
function MonthName(p_Date){
	return monthName(p_Date);
}