function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}
function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
 var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
   var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
   if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}


function xmlhttpPost(strURL,date,ds) {
    var xmlHttpReq = false;
    var self = this;
    // Mozilla/Safari
    if (window.XMLHttpRequest) {
        self.xmlHttpReq = new XMLHttpRequest();
    }
    // IE
    else if (window.ActiveXObject) {
        self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
    }
    self.xmlHttpReq.open('POST', strURL, true);
    self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
    self.xmlHttpReq.onreadystatechange = function() {
        if (self.xmlHttpReq.readyState == 4) {
            updatepage(self.xmlHttpReq.responseText);
        }
    }
    self.xmlHttpReq.send(getquerystring(date,ds));
}

function getquerystring(d,s) {
    document.getElementById("calData").innerHTML='Searching...';
    var str='';
    for(var i=0; i < document.qform.showbranch.length; i++){
       if (document.qform.showbranch[i].checked){
         str = str + document.qform.showbranch[i].value + ",";
       }
    }
    var cat='';
    for(var i=0; i < document.qform.cat.length; i++){
       if (document.qform.cat[i].checked){
         cat = cat + document.qform.cat[i].value + ",";
       }
    }
    var srh = document.qform.search.value;

    if (!d){d = document.storage.month.value;}
    qstr = 'date=' + d + '&ds=' + s + '&br=' + str + '&cats=' + cat + '&search=' +srh;  // NOTE: no '?' before querystring
    return qstr;
}

function updatepage(str){
    var ra = str.split("|#|");
    document.getElementById("calData").innerHTML = ra[0];
    document.storage.days.value=ra[1];
    new Calendar('events');
}

function clear_all(){
    for(var i=0; i < document.qform.showbranch.length; i++){
       document.qform.showbranch[i].checked = false;
    }
}
function select_all(){
    for(var i=0; i < document.qform.showbranch.length; i++){
       document.qform.showbranch[i].checked = true;
    }
}
function clear_cats(){
    for(var i=0; i < document.qform.cat.length; i++){
       document.qform.cat[i].checked = false;
    }
}
function select_cats(){
    for(var i=0; i < document.qform.cat.length; i++){
       document.qform.cat[i].checked = true;
    }
}




/*
Copyright 2004, Paul Tero, Version 1.0.0
This is a popup calendar written entirely in Javascript. It puts the date into a text field
which can be hidden. The colours and fonts are controlled by the styles below. It is implemented
as a calendar object which has several methods, and there a few additional methods for
the date object as well.

*/


//Show the properties of an object
function showProperties (o) {var r = ""; for (var p in o) {r += p + ": " + o[p] + "\t";} alert (r);}

//This uses a calendar object.
function Calendar (name, initialdate, callback, noweekends) {
	this.name = name;
	this.fullname = "calendar_" + name;
	this.displaydate = new Date(); //the date to display
	if (document[this.fullname]) { //the calendar has already been used before, get the old data
		this.displaydate = document[this.fullname].displaydate;
		this.initialdate = document[this.fullname].initialdate;
	}
	else {
		if (initialdate) {this.displaydate.setTime (Date.parse (initialdate));} //set to the initialisation date
		this.initialdate = new Date (this.displaydate.getTime()); //store the initial date
	}
	this.callback = callback; //the callback function which is passed the date
	this.weekends = noweekends ? false : true; //display weekends or not
	this.format(); //format this calendar
	document[this.fullname] = this; //save a copy of this object (which we will reference in links)
}

//Change the text of the calendar and display or hide it
function Calendar_change (text, visible) {
	if (!document.getElementById) return; //IE and Firefox only for now
	var el = document.getElementById(this.fullname); //get the element
	if (text) el.innerHTML = text; //set the text
	el.style.visibility = visible ? "visible": "hidden"; //show or hide it
}

//Get a link which calls a function in the calendar
function Calendar_getLink (callback, text) { 
      var d = text.toString();
      if (d < 10) {d = "0"+d;} 
      var myregex = new RegExp(document.storage.days.value);
      var res = myregex.exec(d); 
       if ( res > 0 || text == "&gt;" || text == "&lt;" ){
	var r = "<a href=\"javascript:void document." + this.fullname + "."; //start the link
	r += callback + "\">" + text + "</a>"; //add the call back and text
	return r; //return the link
       }else{
        return text;
       }
}

//Add a month to the calendar display date
function Calendar_addMonths (howmany) {
	this.displaydate.addMonths(howmany); 
	this.format(true);
        set_month(this.displaydate);
	xmlhttpPost('/perl/eventcal.pl',this.displaydate,0);
}

//Return the name of the calendar and the date to the requested function. The defautl just calls
//the same page passing in the name, display time and display date.
function Calendar_returnDate (day) {
	this.displaydate.setDate(day);
        xmlhttpPost('/perl/eventcal.pl',this.displaydate,1);
//	if (this.callback) eval ([this.callback] + "(this.name, this.displaydate)"); //call the call back function
//	else document.location.href = document.location.pathname + "?calendarname=" + this.name + 
//		"&calendartime=" + Math.floor(this.displaydate.getTime()/1000) + //because it's in milliseconds
//		"&calendardate=" + this.displaydate.toGMTString();
}

//Output the table
function Calendar_format() {
	var days = new Array ("So", "Mo", "Tu", "We", "Th", "Fr", "Sa");
	var firstcol = this.weekends ? 0 : 1; //start from day 0 if we have weekends
	var lastcol = this.weekends ? 6 : 5; //end at day 6 if we have weekends
	//////////////// display the header rows ////////////////
	var r = "<table cellspacing=\"0\">\n"; //start the table
	r += "<tr><th class=\"calendararrows\">" + this.getLink ("addMonths(-1)", "&lt;") + "</th>\n"; //back a month
	r += "<th class=\"calendarmonth\" colspan=\"" + (this.weekends ? 5 : 3) + "\">"; //colspan of the title
	r += "<a href=\"javascript:void\" onclick=\"xmlhttpPost('/perl/eventcal.pl','"+this.displaydate+"',0)\">";
	r += this.displaydate.getMonthName() + " " + this.displaydate.getActualYear(); //the month and year
        r += "</a>";
	r += "</th>\n<th class=\"calendararrows\">" + this.getLink ("addMonths(1)", "&gt;") + "</th>\n</tr>\n"; //add a month
	var cellwidth = Math.floor (100/ (this.weekends ? 7 : 5)); //width of each weekday column
	for (var day=firstcol; day<=lastcol; day++) {r += "<col width=\"" + cellwidth + "%\" />\n";} //width of cells
	r += "<tr>"; //start the days of the week
	for (var day=firstcol; day<=lastcol; day++) {r += "<th class=\"calendardayofweek\">" + days[day] + "</th>\n";}
	r += "</tr>\n"; //end of days of week
	//////////////// get the start and end day for this month ////////////////
	var td = new Date (this.displaydate.getTime()); //for this we will need to use a temporary date
	var initialnumber = (td.getMonth() == this.initialdate.getMonth()) && (td.getYear() == this.initialdate.getYear()) ?
		this.initialdate.getDate() : 0; //set to the initial date's number or 0
	td.setDate(1); //go to the first of the month
	var startday = td.getDay(); //get the day of the week
	td.addMonths(1); //add a month to the temporary date
	var endday = (td.getDay() + 6) % 7; //end on this day of the week (and subtract one)
	var td = new Date(); //reset to now
	var todaynumber = (td.getMonth() == this.displaydate.getMonth()) && (td.getYear() == this.displaydate.getYear()) ?
		td.getDate() : 0; //set to today's date's number or 0
	//////////////// figuring out starting week and number of weeks ////////////////
	//var numweeks = (startday==0 && endday==6) ? 5 : 6; //the number of weeks to display (4 in February)
	var startweek = 1; //which week to start with
	if (!this.weekends && startday==6) startweek=2; //start on week 2 if the first day is a Sat or Sun
	var numweeks = 6; //maximum number of weeks needed to display this month
	if (endday > startday-2) numweeks = 5; //can be displayed in 5 weeks
	if (startday == 0 && endday == 6) numweeks = 4; //a February starting on a Sunday
	var endweek = numweeks; //the last week do display (so that the last week is shown if the next statement is true)
	if (!this.weekends && (endday%6 < 1)) numweeks--; //end a week early if the last day is a Sat or Sun
	//////////////// display the numbers ////////////////
	for (var week=startweek; week<=numweeks; week++) { //for each week (4 only in February)
		r += "<tr>";
		for (var day=firstcol; day<=lastcol; day++) { //for each day of the week
			var daynumber = (week-1)*7 + day - startday + 1; //the day number
			var dayclass="normal"; var daylink=true; //the dayclass and daylink for this day
			if (week==1 && day<startday) {dayclass="blank"; daylink=false;} //before the first day
			else if (week==endweek && day>endday) {dayclass="blank"; daylink=false;} //after the last day
			else if (daynumber==todaynumber) {dayclass="today"; daylink=true;} //todays' date
			else if (daynumber==initialnumber) {dayclass="initial"; daylink=true;} //initial date
			r += "<td class=\"calendar" + dayclass + "\">";
			r += daylink ?  this.getLink ("returnDate(" + daynumber + ")", daynumber) : "&nbsp;";
			r += "</td>\n";
		}
		r += "</tr>\n";
	}
	//////////////// finish the table ////////////////
	r += "<tr><th class=\"calendarclose\" colspan=\"" + (this.weekends ? 7 : 5) + "\">";
	r += this.getLink ("change('',false)", "") + "</th></tr>\n"; //end the days of the week
	r += "</table>"; //end the table
	this.change (r, true);
}

//Get the month name from a date object
function Date_getMonthName() {
	var months = new Array ("January", "February", "March", "April", "May", "June",
				"July", "August", "September", "October", "November", "December");
	return months[this.getMonth()];
}
//Get the actual year from a date object
function Date_getActualYear() {var year = this.getYear(); return year < 500 ? year + 1900 : year;}	

//Change the month of a date by adding or subtracting months
function Date_addMonths (howmany) {
	var month = this.getMonth() + howmany;
	this.setYear (this.getActualYear() + Math.floor (month / 12)); //change the year
	this.setMonth ((month+12)%12); //change the month
}

Calendar.prototype.returnDate = Calendar_returnDate;
Calendar.prototype.change = Calendar_change;
Calendar.prototype.getLink = Calendar_getLink;
Calendar.prototype.format = Calendar_format;
Calendar.prototype.addMonths = Calendar_addMonths;
Date.prototype.getMonthName = Date_getMonthName;
Date.prototype.getActualYear = Date_getActualYear;
Date.prototype.addMonths = Date_addMonths;



function open_body(br,o) {
    var body = "body_"+br;
    var arrow = "arrow_"+br;
    if (o){
      document.getElementById(body).style.display = 'block'; 
      document.getElementById(arrow).innerHTML = '<img src=\'/eventcal/down.gif\' onclick=open_body("'+br+'",0)';
    }else{
      document.getElementById(body).style.display = 'none';
      document.getElementById(arrow).innerHTML = '<img src=\'/eventcal/up.gif\' onclick=open_body("'+br+'",1)';
    }
}
function close_body(br) {
    var body = "body_"+br;
    var more = "more_"+br;
    document.getElementById(body).style.display = 'none';
    document.getElementById(more).style.display = 'block';
}

function set_month(str){
    document.storage.month.value=str;
}
function set_days(str){
    document.storage.days.value=str;
}