function initCalendar(url) {
var dat = new Date();
var datum = dat.getDate()+"."+(dat.getMonth()+1)+"."+dat.getFullYear();
var defaultCurrentDatum = dat.getDate()+"."+(dat.getMonth()+1)+"."+dat.getFullYear();
var datumTag = dat.getDate();
var tag = dat.getDay();
var montagDatum = datumTag - (tag-1);
var dienstagDatum = montagDatum + 1;
var mittwochDatum = montagDatum + 2;
var donnerstagDatum = montagDatum + 3;
var freitagDatum = montagDatum + 4;
var sonnabendDatum = montagDatum + 5;
var sonntagDatum = montagDatum + 6;
var calWeek = "";
var year = dat.getFullYear();
var monthName = dat.getMonthName();
var wochendaten = new Array(montagDatum, dienstagDatum, mittwochDatum, donnerstagDatum, freitagDatum, sonnabendDatum, sonntagDatum);
var up = true;
var noEvents = "";
var noEventsToday = "";
var currentCalWeek = "";
$.get(url, function(xml) {
/* Aktuelle Kalenderwoche setzen */
$("span.calWeek").text(getCalWeek(dat.getFullYear(),(dat.getMonth()+1),dat.getDate()));
$("span.monthName").text(monthName);
$("span.year").text(year);
currentCalWeek = getCalWeek(dat.getFullYear(),(dat.getMonth()+1),dat.getDate());
/* Den Text für "keine Termine" sprachspezifisch aus der XML-Datei holen */
noEvents = $(xml).find("noEvents[lang="+ $("html").attr("lang")+"]").text();
noEventsToday = $(xml).find("noEventsToday[lang="+ $("html").attr("lang")+"]").text();
showWeek();
/*Defaultanzeige der Termine für das aktuelle Datum (now) */
findTermin(defaultCurrentDatum);
function updateWeekShow() {
$("ul.displayWeek").empty();
dat.getDate();
calWeek = getCalWeek(dat.getFullYear(),(dat.getMonth()+1),dat.getDate());
monthName = dat.getMonthName();
year = dat.getFullYear();
$("span.calWeek").text(calWeek);
$("span.monthName").text(monthName);
$("span.year").text(year);
}
function updateEventShow() {
$("div.displayEvents dl").empty();
}
function showEventDays() {
$(xml).find("termin").each(function(i) {
var range = $(this).attr("days");
var dateStart = $(this).children("datumStart").text().split(".").join("\\.");
var dateEnd = $(this).children("datumEnd").text().split(".").join("\\.");
$("#"+ dateStart).addClass("hasEvent");
$("#"+ dateEnd).addClass("hasEvent");
/* den Bereich zwischen start- u. endtermin holen */
$("#"+ dateStart).nextAll().slice(0,range-1).addClass("hasEvent");
$("#"+ dateEnd).prevAll().slice(0,range-1).addClass("hasEvent");
});
}
function showWeek(up){
var startEventArr = new Array();
var endEventArr = new Array();
/* Daten sortieren */
$(xml).find("termin").each(function(i) {
var arrLength = $(xml).find("termin").length;
startEventArr[i] = Date.parse($(this).children("datumStart").text()).getTime();
endEventArr[i] = Date.parse($(this).children("datumEnd").text()).getTime();
});
startEventArr.sort();
endEventArr.sort();
if (up == true) {
dat.addDays(8).getDate();
updateWeekShow();
} else if (up == false){
dat.addDays(-6).getDate();
updateWeekShow();
} else {
dat.setDate(montagDatum);
}
for (i = 0; i < 7; i++) {
if (dat.getDate()+"."+(dat.getMonth()+1)+"."+dat.getFullYear() == datum) {
$("div ul.displayWeek").append("" + dat.getDate() + "" + dat.getDayName(true) + "");
$("ul.displayWeek li a").click(function(){
return false;
});
} else {
$("div ul.displayWeek").append("" + dat.getDate() + "" + dat.getDayName(true) + "");
$("ul.displayWeek li a").click(function(){
findTermin($(this).parents().attr("id"));
$(this).parents().siblings().removeClass("today");
$(this).parents().addClass("today");
if ($(this).parents().attr("class") == "today") {
$(".eventCalendar div.displayEvents dl").html("" + noEvents + " ");
};
if ($(this).attr("rel") == "heute" && $(this).parents("li").attr("class") != "hasEvent today" && $(this).parents("li").attr("class") != "today hasEvent") {
$(".eventCalendar div.displayEvents dl").html("" + noEventsToday + " ");
};
return false;
});
}
showEventDays();
dat.addDays(1);
}
/* Sonntag der aktuellen Woche mit dem letzten Termin vergleichen */
var currentSunday = dat.addDays(-1).getTime();
var currentMonday = dat.addDays(-7).getTime();
var last = endEventArr[endEventArr.length-1];
var first = startEventArr[0];
if (hasDatesInFuture(currentSunday,last) == false) {
$("a.nextWeek").hide();
} else {
$("a.nextWeek").show();
}
if ((hasDatesInPast(currentMonday,first) == false) && (currentCalWeek == $("span.calWeek").text())) {
$("a.prevWeek").hide();
} else {
$("a.prevWeek").show();
}
}
/* Eine Kalenderwoche weiter schalten */
$("a.nextWeek").click(function(){
showWeek(true);
return false;
}
);
/* Eine Kalenderwoche zurück schalten */
$("a.prevWeek").click (
function() {
showWeek(false);
return false;
}
);
/* Termine suchen und anzeigen */
function findTermin(weekID) {
updateEventShow();
var weekIDmilli = Date.parse(weekID).getTime();
if(currentCalWeek == $("span.calWeek").text()) {
$(".eventCalendar div.displayEvents dl").html("" + noEventsToday + " ");
} else {
$(".eventCalendar div.displayEvents dl").html("" + noEvents + " ");
}
$(xml).find("termin").each(function(i) {
var range = $(this).attr("days");
var startMilli = Date.parse($(this).children("datumStart").text()).getTime();
var endMilli = Date.parse($(this).children("datumEnd").text()).getTime();
if ($(this).children("datumStart").text() == weekID || $(this).children("datumEnd").text() == weekID || (startMilli < weekIDmilli && endMilli > weekIDmilli)) {
$(".eventCalendar div.displayEvents dl dt[class=noEvents]").hide();
$(".eventCalendar div.displayEvents dl dt[class=noEvents]").next("dd").hide();
var loc = $(this).find("location").text();
if (loc!="")
loc = ", " + loc;
else
loc = loc;
if (range > 1) {
$("div.displayEvents dl").append("" + $(this).children("datumStart").text() + " - " + $(this).children("datumEnd").text() + "" + $(this).find("text").text() + loc + "");
}
else {
$("div.displayEvents dl").append("" + $(this).children("datumStart").text() + "" + $(this).find("text").text() + loc + "");
}
}
});
}
/* Gibt es noch Termine nach dem Sonntag dieser Woche? */
function hasDatesInFuture (currentSunday,last) {
return currentSunday < last;
}
/* Gibt es noch Termine vor dem Montag dieser Woche? */
function hasDatesInPast (currentMonday,first) {
return currentMonday > first;
}
/* Kalenderwoche berechnen, da die funktion getWeekOfYear() fehlerhaft ist */
function getCalWeek(jahr,monat,tag) {
var datum=new Date(jahr,monat-1,tag);
var jh=jahr+1;
var kalwo=getCalDiff(datum,jh);
while(kalwo<1) { jh--; kalwo=getCalDiff(datum,jh); }
return kalwo;
}
function getCalDiff(datum,jahr) {
var d4j=new Date(jahr,0,4);
var wt4j=(d4j.getDay()+6)%7;
var m1wjT=Math.floor(0.01+d4j.getTime()/864e5-wt4j);
var datumT=Math.floor(0.01+datum.getTime()/864e5);
return Math.floor(1+(datumT-m1wjT)/7);
}
});
}