cmpDat = new Array(2007,   12,     2,    0,  0,   0);
/*                 year    mon     day   hr  min  sec
*/
function compareDates(cmpDat){
	var jd:Date = new Date();
	var zd:Date = new Date(cmpDat[0], cmpDat[1]-1, cmpDat[2], cmpDat[3], cmpDat[4], cmpDat[5], 0);
	if(zd.getTime()<jd.getTime()){
		return true;
			} else {
		return false;
	}
}
// the time is now? (true / false)
if(compareDates(cmpDat)){
	trace('ok das wars dann');
}

http://snippets.dzone.com/posts/show/4735

This should come in handy some day.

Compare Two Dates

ActionScript 3