public static Technique getTechnique(int id){
		for(Technique t: techniquesBack){
			if(t.ID == id) return t;
		}
		for(Technique t: techniquesForward){
			if(t.ID == id) return t;
		}
		for(Technique t: techniquesUp){
			if(t.ID == id) return t;
		}
		for(Technique t: techniquesDown){
			if(t.ID == id) return t;
		}
		return null;
	}