/*******************
开发制作,jason.leung
qq,147430218
该插件仅供学习参考使用
*******************/

function myevent(obj,ev,fn){
	if (obj.attachevent){
		obj.attachevent('on'+ev,fn);
	}else{
		obj.addeventlistener(ev,fn,false);
	};
};

function getbyclass(obj,sclass){
	var array = [];
	var elements = obj.getelementsbytagname('*');
	for (var i=0; i<elements.length; i++){
		if (elements[i].classname == sclass){
			array.push (elements[i]);
		};
	};
	return array;
};

var cs_box = {
	set : function(json){
		this.box = document.getelementbyid('cs_box');
		//this.setimg(json);
		this.qqfn(json);
		this.cs_close();
	},
	cs_close : function(){
		this.btn = getbyclass(this.box,'cs_close')[0];
		var _this = this;
		var speed = 0;
		var timer = null;
		var sh = document.documentelement.clientheight || document.body.clientheight;
		this.btn.onclick = function(){
			clearinterval(timer);
			timer = setinterval(function(){
				speed += 4;
				var t = _this.box.offsettop + speed;
				if (t >= sh-_this.box.offsetheight){
					speed *= -0.8;
					t = sh-_this.box.offsetheight;
				};
				if (math.abs(speed)<2)speed = 0;
				if (speed == 0  && sh-_this.box.offsetheight == t){
					clearinterval(timer);
					_this.fn();
				};
				_this.box.style.top = t + 'px';
			}, 30);
		};
	},
	fn : function(){
		var _this = this;
		var timer = settimeout(function(){
			_this.box.style.display = 'none';
		}, 1000);
	},
};