function available(today,ttime,vastart, vatime, deb) {
	if (deb==1) return true;
	var TodayTag=parseInt(Number(today.substr(0,2)));
	var TodayMonat=parseInt(Number(today.substr(3,2)))-1;
	var TodayJahr=parseInt(Number(today.substr(6,4)));
	var tmp_today_time = ttime.split(":"); 
	var StartTag=parseInt(Number(vastart.substr(0,2)));
	var StartMonat=parseInt(Number(vastart.substr(3,2)))-1;
	var StartJahr=parseInt(Number(vastart.substr(6,4)));
	var tmp_start_time = vatime.split(":"); 
	
	if (Date) {
		// wenn Date-Object im Browser vorhanden
		
		var today = new Date(TodayJahr,TodayMonat,TodayTag,tmp_today_time[0], tmp_today_time[1]);
		var start = new Date(StartJahr,StartMonat,StartTag,tmp_start_time[0], tmp_start_time[1]);
		var today_ms = today.getTime();
		var start_ms = start.getTime();
		var diff = (start_ms-today_ms)/(86400*1000);
		
		if (diff>10) {
			
			return true;
		} else {
		
			return false;
		
		}
	}
	return false;

}