function ChangeClass(id,nr) {

switch(nr) {
	case 1:
		var NAME = new Array();

		NAME[0]="mhome";
		NAME[1]="msummer";
		NAME[2]="mwinter";
		NAME[3]="mconsort";
		NAME[4]="mimpressions";
		NAME[5]="mcontact";
		NAME[6]="mstatement";

		for(i = 0; i < 7; i++){
			var x = document.getElementById(NAME[i]);
			if(x.className=="menu1active"){
				x.className="menu1";
			}
		}

		var y = document.getElementById(id);
		y.className="menu1active";
		break;
		
	case 2:
		var NAME = new Array();

		NAME[0]="mabout";
		NAME[1]="msbc";
		NAME[2]="mnob";
		NAME[3]="mlongb";
		NAME[4]="mskim";

		for(i = 0; i < 5; i++){
			var x = document.getElementById(NAME[i]);
			if(x.className=="menu2active"){
				x.className="menu2";
			}
		}

		var y = document.getElementById(id);
		y.className="menu2active";
		break;
		
	default:
		break;
}
}