var LargeViewCalendar = {};

LargeViewCalendar.runMode = true;
LargeViewCalendar.EMPTY_SPOTS = new Array();
LargeViewCalendar.SELECTOR_DAYS = 'div.day';
LargeViewCalendar.SELECTOR_WEEKS = 'div.week';
LargeViewCalendar.SELECTOR_EVENTS_FROM_DAY = 'li';
LargeViewCalendar.SELECTOR_HEADER_FROM_DAY = 'h5';
LargeViewCalendar.initialize = function(calID) {
if (!this.runMode) {
return;
}

for (var i = 0; i < 100; i++) {
this.EMPTY_SPOTS.push(null);
}
var calendar = $(calID);

this.prepDayElements(calendar);
this.positionEvents(calendar);
this.postEventRendering(calendar);
Event.observe(window, "resize", function() {
LargeViewCalendar.prepDayElements(calendar);
LargeViewCalendar.positionEvents(calendar);
LargeViewCalendar.postEventRendering(calendar);
});
};
LargeViewCalendar.postEventRendering = function(calendar) {
calendar.select(LargeViewCalendar.SELECTOR_DAYS).each(function(day) {
var header = day.select(LargeViewCalendar.SELECTOR_HEADER_FROM_DAY).first();
var link = null;
if (day.moreEvents && !(day.moreEventLink)) {

link = $(document.createElement('a'));
link.setAttribute('href', '#' + day.date);

link.onclick = header.onclick;
link.innerHTML = '(' + day.moreEvents + ' more)';

header.innerHTML += ' &nbsp;';
header.insert(link);

day.moreEventLink = true;

header.onclick = function() {};
} else {
header.onclick = function() {};
}
});
};
LargeViewCalendar.positionEvents = function(calendar) {
calendar.select(LargeViewCalendar.SELECTOR_DAYS).each(function(day) {
day.select(LargeViewCalendar.SELECTOR_EVENTS_FROM_DAY).sort(function(a, b) {

return b.getAttribute('days') - a.getAttribute('days'); 
}).each(function(event) {
LargeViewCalendar.correctEventSize(event, day);
});
});
};
LargeViewCalendar.prepDayElements = function(calendar) {
var weekCounter = 0;
calendar.select(LargeViewCalendar.SELECTOR_WEEKS).each(function(week) {
weekCounter++;
var days = week.select(LargeViewCalendar.SELECTOR_DAYS).reverse();
var following = new Array();
days.each(function(day) {

day._originalHeight = null;
day._originalWidth = null;
day.relativize();
day.weekNumber = weekCounter;
day.events = 0;
day.spots = LargeViewCalendar.EMPTY_SPOTS.clone();
day.moreEvents = 0;
day.followingDays = following.clone().reverse();
following.push(day);
day.date = day.select(LargeViewCalendar.SELECTOR_HEADER_FROM_DAY).first().innerHTML;
});
});
};
LargeViewCalendar.correctEventSize = function(event, day) {
var days = event.getAttribute('days');
var headerHeight = day.select(LargeViewCalendar.SELECTOR_HEADER_FROM_DAY).first().getHeight();
var eventHeight = event.getHeight() + 1;
var eventWidth = (event.getWidth() * days);
var lastDay = day;
var top = null;
var finalSpot = day.events++;
event.absolutize();

for (var spot = 0; spot < 100; spot++) {
if (this.spotWillWork(spot, day, days)) {
finalSpot = spot; 
break;
}
}
day.spots[finalSpot] = event;
for (var i = 0; i < (days - 1); i++) {
var fDay = day.followingDays[i];
lastDay = fDay;
fDay.spots[finalSpot] = event;
}
eventWidth = this.calculateWidthForEvent(event, lastDay);
event.style.width = eventWidth;
top = (event.getHeight() * (spot)) + headerHeight;
top = top + (spot * 2); 
if (top + eventHeight > day.getHeight()) {
day.moreEvents++;
event.hide();
}

this.setTop(event, top);
};
LargeViewCalendar.spotWillWork = function(spot, day, days) {
if (day.spots[spot] != null) {
return false;
}
for (var i = 0; i < (days - 1); i++) {
var fDay = day.followingDays[i];
if (fDay.spots[spot] != null) {
return false;
}
}
return true;
};
LargeViewCalendar.calculateWidthForEvent = function(event, lastDay) {
return (lastDay.cumulativeOffset().left + lastDay.getWidth()) - event.cumulativeOffset().left - 7;
};
LargeViewCalendar.getTop = function(elem) {
return elem.cumulativeOffset.top;
};
LargeViewCalendar.setTop = function(elem, top) {
elem.style.top = top + 'px';
};