Calendar JS function

calendar.js

function getCalendar(year, month) {
	var today = new Date(),
		date = new Date(parseInt(year), parseInt(month) - 1),
		weeks = new Array();

	var index = new Date(date.getTime()),
		lastDay = new Date(year, parseInt(month), 0);

	index.setDate(index.getDate() - index.getDay());

	if (index.getDate() === 1 && index.getDay() === 0) index.setDate(index.getDate() - 7);
	if ((index.getDay() || 7) !== 1) index.setDate(index.getDate() + 1);

	while (index.getTime() <= lastDay.getTime()) {
		var week = new Array();
		for (var i = 0; i < 7; i++) {
			var type = "day";
			if (index.getMonth() < date.getMonth() || index.getMonth() > date.getMonth()) type += " oob";
			else if (index.getTime() < today.getTime() && today.getTime() < index.getTime() + 86400000) type += " today";
			
			week.push({type: type, date: new Date(index.getTime())})
			index.setDate(index.getDate() + 1);
		}
		weeks.push(week);
	}
	return {month: month, weeks: weeks}
}