var viewType;
var todayDate = new Date();

function Calendar()
{
	this.idEl;
	this.lastId;
	this.colorCellSelected = "LIGHTYELLOW";
	this.nextView;
	this.previousView;
}

Calendar.prototype.dialog = function() {
	var divAddDialog = document.getElementById("divAddDialog");
	if (_dragArea.initEvent > _dragArea.endEvent){
		var temp = _dragArea.initEvent;
		_dragArea.initEvent = _dragArea.endEvent;
		_dragArea.endEvent = temp;
	}

	if(divAddDialog && divAddDialog.style.display != "none"){
		divAddDialog.style.display = "none";
		for (var hour = parseInt(_dragArea.initEvent); hour <= parseInt(_dragArea.endEvent);(hour%100 == 30)?hour+=70:hour+=30)
			try  { document.getElementById(hour).style.background = ""; } catch (e) { break; };
		_dragArea.initEvent = null;
		_dragArea.endEvent = null;
		try {
			document.getElementById("div_main").style.opacity = 1;
			document.getElementById("div_main").filters.alpha.opacity=100;
		} catch (e) {  }
	return true;
	}

	var cell = document.getElementById(_dragArea.endEvent);
	try {
		document.getElementById("div_main").style.opacity = 0.5;
		document.getElementById("div_main").filters.alpha.opacity=50;
	} catch (e) {};

	var data = '<text><date>'+calendar.parseDate(id2timeStamp(_dragArea.initEvent))+'</date><time>'+ calendar.parseTime(_dragArea.initEvent,_dragArea.endEvent)+'</time></text>';
	var xsl = XMLTools.load('xsl/addDialog.xsl?'+ Date.parse(new Date));

	if(!divAddDialog) {
		divAddDialog = document.createElement("DIV");
		divAddDialog.id = 'divAddDialog';
		divAddDialog.style.zIndex = "10";
		divAddDialog.style.position = "absolute";
		divAddDialog.style.display = "none";
		document.body.appendChild(divAddDialog);
	}
	divAddDialog.style.left = "300px"; //cell.offsetLeft + document.body.scrollLeft;
	divAddDialog.style.top 	= "200px"; //cell.offsetTop - 100 + document.getElementById('div_main').offsetTop;
	divAddDialog.style.display = "block";
	divAddDialog.innerHTML = xtools.parse(data, xsl);
	var closeButton = document.getElementById('closeDialog');
	if (is_ie){
		closeButton.style.left = '285px';
		closeButton.style.top = '5px';
	}else{
		closeButton.style.left = '320px';
		closeButton.style.top = '25px';
	}
	document.getElementById('dragEventSubject').focus();
	document.getElementById('addEventLink').innerHTML = get_lang("Add this event");
	document.getElementById('addDetailsLink').innerHTML = get_lang("Add with details");


	this.lastId = _dragArea.endEvent;

}
Calendar.prototype.getView = function(idEl, type, data)
{
	this.idEl = idEl;
	var _this = this;
	this.lastId = null;

	var handler_getView = function(XMLdata)
	{
			_this.parseView(XMLdata,type);

			if (viewType == "Week"){
				var Today = new Date;
				Today.setTime(id2timeStamp(document.getElementById('day').firstChild.id));
				var lastWeek = new Date;
				lastWeek.setTime(Today.getTime()-(60*60*24*7*1000));
				this.previousView = (lastWeek.getYear()+1900)+normDec(lastWeek.getDate()-7)+normDec(lastWeek.getMonth()+1);
				Today.setTime(Today.getTime()+(60*60*24*8*1000));
				this.nextView = (Today.getYear()+1900)+normDec(Today.getDate())+normDec(Today.getMonth()+1);
			}
			if (viewType == "Day"){
				var Today = new Date;
				Today.setTime(id2timeStamp(document.getElementById('day').firstChild.id));
				this.previousView = (Today.getYear()+1900)+normDec(Today.getDate()-1)+normDec(Today.getMonth()+1);
				Today.setDate(Today.getDate()+1);
				this.nextView = (Today.getYear()+1900)+normDec(Today.getDate())+normDec(Today.getMonth()+1);
			}
			if (viewType == 'Month'){
				var Today = new Date;
				Today.setTime(id2timeStamp(document.getElementById('day').firstChild.id));
				this.previousView = (Today.getYear()+1900)+normDec(Today.getDate())+normDec(Today.getMonth());
				Today.setMonth(Today.getMonth()+1);
				this.nextView = (Today.getYear()+1900)+normDec(Today.getDate())+normDec(Today.getMonth()+1);
			}
			document.getElementById("l_date").innerHTML =  "<a href=\"javascript:calendar.getView('div_main','"+viewType+"','&time='+this.previousView);\">\<\<&nbsp;</a>";
			if (viewType == "Week")
				document.getElementById("l_date").innerHTML += calendar.parseWeek(id2timeStamp(document.getElementById('day').firstChild.id));
			if  (viewType == "Day")
				document.getElementById("l_date").innerHTML += calendar.parseDate(id2timeStamp(document.getElementById('day').firstChild.id));
			if (viewType == "Month")
				document.getElementById("l_date").innerHTML += calendar.parseMonth(id2timeStamp(document.getElementById('day').firstChild.id));
			document.getElementById("l_date").innerHTML += "<a href=\"javascript:calendar.getView('div_main','"+viewType+"','&time='+this.nextView);\">&nbsp;\>\></a>";

		var events = document.getElementById('returnEvents');
		while(typeof(events.firstChild.id) == 'string'){
			createEventDiv(events.firstChild);
		}

	};

	XMLTools.__RETURN_MODE__ = 'XML';
	viewType = type;
	screenTable = new Array();
	XMLTools.request('$this.uicalendar.getView'+type+(data?data:''), 'GET', handler_getView);  
};


Calendar.prototype.parseView = function(data,type)
{
	var _this = this;
	try {
	    var xsl = XMLTools.load('xsl/view'+type+'.xsl?'+ Date.parse(new Date));
	    var div = document.getElementById(this.idEl);
	    div.innerHTML = xtools.parse(data, xsl);
	}
	catch(e){
		alert(e);
	}

	if (type == 'Week' || type == 'Month'){
		var trWeek = document.getElementById('tr_week');
		for (var i=0; i < trWeek.childNodes.length; i++)
			trWeek.childNodes[i].innerHTML = get_lang(trWeek.childNodes[i].innerHTML);
	}
};


Calendar.prototype.parseTime = function (first, last) {

	var hour	= first.substring(8,10);
	var minute 	= first.substring(10,12);
	var startHour = hour+":"+minute;
	
	if(last && first != last) {
		hour	= last.substring(8,10);
		minute 	= last.substring(10,12);
	}

	if(minute == "30") {
		hour	= parseInt(hour,10);
		hour	= normDec(hour+1);
		minute 	= "00";
	}
	else {
		minute	= "30";
	}
	return startHour+ " - "+ hour+":"+minute;
}
Calendar.prototype.parseWeek = function (timeStamp) {
	dateObj=new Date();
	dateObj.setTime(timeStamp);
	Year=dateObj.getYear();
	if (Year < 70) { Year=Year*1+2000; }
	if (Year < 1900) { Year=Year*1+1900; }
	Then=new Date(Year, 0, 1);
	Then_Day=Then.getDay();
	Diff=dateObj*1-Then*1;
	Days=Math.floor(Diff/(1000*60*60*24)+(1/24));
	Week=Math.floor((Days+Then_Day)/7)+1;
	return get_lang("Week Number %1 of %2",Week,Year);
}
Calendar.prototype.parseMonth = function (timeStamp) {
	obj=new Date();
	obj.setTime(timeStamp);
	switch(obj.getMonth()) {
		case 0: month = "January"; break;
		case 1: month = "February"; break;
		case 2: month = "March"; break;
		case 3: month = "April"; break;
		case 4: month = "May"; break;
		case 5: month = "June"; break;
		case 6: month = "July"; break;
		case 7: month = "August"; break;
		case 8: month = "September"; break;
		case 9: month = "October"; break;
		case 10: month = "November"; break;
		case 11: month = "December"; break;
		default: month = ""; break;
	}
	return get_lang(month);
}
Calendar.prototype.parseDate = function (timeStamp) {
	var obj = new Date();
	obj.setTime(timeStamp);

	var day;
	switch(obj.getDay()) {  
		case 0: day = "Sunday"; break;  
		case 1: day = "Monday"; break;  
		case 2: day = "Tuesday"; break;  
		case 3: day = "Wednesday"; break;  
		case 4: day = "Thursday"; break;  
		case 5: day = "Friday"; break;  
		case 6: day = "Saturday"; break;  
		default: day = ""; break;
	}

	var month;
	switch(obj.getMonth()) {  
		case 0: month = "January"; break;  
		case 1: month = "February"; break;  
		case 2: month = "March"; break;  
		case 3: month = "April"; break;  
		case 4: month = "May"; break;  
		case 5: month = "June"; break;  
		case 6: month = "July"; break;  
		case 7: month = "August"; break;  
		case 8: month = "September"; break;  
		case 9: month = "October"; break;  
		case 10: month = "November"; break;  
		case 11: month = "December"; break;  
		default: month = ""; break;
	}

	year = (is_ie?parseInt(obj.getYear()):parseInt(obj.getYear())+1900);
	
	return get_lang(day)+", "+obj.getDate()+" "+get_lang("of")+" "+get_lang(month)+" "+get_lang("of")+" "+year; // FIXME USE FORMAT DATE AS PREFERENCE
}
var calendar = new Calendar();