/*
该文件是从网上收集的方法，用来做开关灯的，相对于原来的程序做了一些改变，兼容了ie10
*/
var offlights = {
    create: function() {
        return function() {
            this.initialize.apply(this, arguments)
        }
    }
}
var overlay = offlights.create();
overlay.prototype = {
    initialize: function(options) {
        this.setoptions(options);
		this.browser = (function(ua){
			  var a=new object();
			  var b = {
				  msie: /msie/.test(ua) && !/opera/.test(ua),
				  opera: /opera/.test(ua),
				  safari: /webkit/.test(ua) && !/chrome/.test(ua),
				  firefox: /firefox/.test(ua),
				  chrome: /chrome/.test(ua)
			  };
			  var vmark = "";
			  for (var i in b) {
				  if (b[i]) { vmark = "safari" == i ? "version" : i; break; }
			  }
			  b.version = vmark && regexp("(?:" + vmark + ")[\\/: ]([\\d.]+)").test(ua) ? regexp.$1 : "0";
			  b.ie = b.msie;
			  b.ie6 = b.msie && parseint(b.version, 10) == 6;
			  b.ie7 = b.msie && parseint(b.version, 10) == 7;
			  b.ie8 = b.msie && parseint(b.version, 10) == 8;
			  a.b=vmark;
			  a.v=b.version;
			  return a;
		  })(window.navigator.useragent.tolowercase());
		this.isie = this.browser['b']=='msie' ? true : false;
		this.isie6 = (this.isie && this.browser['v']==6)?true:false;
		this._k_ = function(id) {return "string" == typeof id ? document.getelementbyid(id) : id};
        this.lay = this._k_(this.options.lay) || document.body.insertbefore(document.createelement("div"), document.body.childnodes[0]);
        this.color = this.options.color;
        this.opacity = parseint(this.options.opacity);
        this.zindex = parseint(this.options.zindex);
        with(this.lay.style) {
            display = "none";
            zindex = this.zindex;
            left = top = 0;
            position = "fixed";
            width = height = "100%"
        }
        if (this.isie6) {
            this.lay.style.position = "absolute";
            this._resize = this.bind(this,
            function() {
                this.lay.style.width = math.max(document.documentelement.scrollwidth, document.documentelement.clientwidth) + "px";
                this.lay.style.height = math.max(document.documentelement.scrollheight, document.documentelement.clientheight) + "px"
            });
            this.lay.innerhtml = ''
        }
    },
	bind:function(object, fun) {
		return function() {
			return fun.apply(object, arguments)
		}
	},
	extend :function(destination, source) {
		for (var property in source) {
			destination[property] = source[property]
		}
	},
    setoptions: function(options) {
        this.options = {
            lay: null,
            color: "#000",
            opacity: 100,
            zindex: 50
        };
        this.extend(this.options, options || {})
    },
    show: function() {
        if (this.isie6) {
            this._resize();
            window.attachevent("onresize", this._resize)
        }
        with(this.lay.style) {
            this.isie ? filter = "alpha(opacity:" + this.opacity + ")": opacity = this.opacity / 100;
            backgroundcolor = this.color;
            display = "block"
        }
    },
    close: function() {
        this.lay.style.display = "none";
        if (this.isie6) {
            window.detachevent("onresize", this._resize)
        }
    }
};
var lightbox = offlights.create();
lightbox.prototype = {
    initialize: function(options) {
        this.overlay = new overlay(options);
    },
    show: function(options) {
        this.overlay.show();
    },
    close: function() {
        this.overlay.close();
    }
};