/**
 * 键盘按钮
 */

var Keyboard = function(){
	
	this.UP = 38;
	this.DOWN = 40;
	this.RIGHT = 39;
	this.LEFT = 37;

	this.SPACE = 32;
	this.TAB = 9;
	this.ENTER = 13;
	this.CTRL = 17;
	this.ALT = 18;

	this.Num0 = 48;
	this.Num1 = 49;
	this.Num2 = 50;
	this.Num3 = 51;
	this.Num4 = 52;
	this.Num5 = 53;
	this.Num6 = 54;
	this.Num7 = 55;
	this.Num8 = 56;
	this.Num9 = 57;
	
	this.A = 65;
	this.B = 66;
	this.C = 67;
	this.D = 68;
	this.E = 69;
	this.F = 70;
	this.G = 71;
	this.H = 72;
	this.I = 73;
	this.J = 74;
	this.K = 75;
	this.L = 76;
	this.M = 77;
	this.N = 78;
	this.O = 79;
	this.P = 80;
	this.Q = 81;
	this.R = 82;
	this.S = 83;
	this.T = 84;
	this.U = 85;
	this.V = 86;
	this.W = 87;
	this.X = 88;
	this.Y = 89;
	this.Z = 90;

};

var keyboard = new Keyboard();