function switchTraining(trainingID){
	try {
		// MMW: quick fix for unknown amount of trainings
		for(i = 0; i <= 99; i++){
			if(i != trainingID){
				new Effect.BlindUp(document.getElementById('trainingSubbox[' + i + ']'));
			}
		}
	}
	
	catch(e){
	}
	
	try {
		// MMW: quick fix for unknown amount of trainings
		for(i = 0; i <= 99; i++){
			document.getElementById('trainingDate[' + i + ']').checked = false;
		}
	}
	
	catch(e){
	}
	
	new Effect.BlindDown(document.getElementById('trainingSubbox[' + trainingID + ']'));
}