(function(window,document){
	var DOC = document,YQ = window.$ = function(selector){
		if(!selector){
			return YQ.elems
		}
		typeof selector === 'string' && (selector = getElements(selector));//简单的判断是dom对象，还是字符串，字符串则开始选择器
		return superElems(selector);
	}
	function superElems(elems){
		if(elems){
			if(elems.nodeType){//判断是否为DOM
				if(typeof elems.getAttribute !=="unknown"){
					var temp = elems;
					elems = [];
					elems[0] = temp;//把本身作为超级对象的第一个，其他方法进行扩展
					for(var i in YQ.elems){
						//扩展对象，保留已有的方法
						typeof elems[i] === "undefined" && (elems[i] = YQ.elems[i])
					}
				}
			}else{//如果为对象，则对对象进行扩展
				elems = YQ.extend(elems,YQ.elems);
			}
		}
		return elems;
	}
	function getElements(selector){
		//伟大的选择器，可以使用sizzle
		var dom = DOC.getElementById(selector);//……
		return dom;
	}
	YQ.tool = {
		isFunction:function(obj){//简单的判断是否为函数
			return obj && typeof obj ==="function";
		}
	}
	//此处为超级对象一些扩展
	YQ.elems = {
		each:function(dom,callback){//强大的each
			if(YQ.tool.isFunction(dom)){
				arguments.callee.call(this,this,dom);
			}else{
				for (var i = 0, len = dom.length; i < len; i++) {
					callback.call(dom, i, dom[i]);
				}
			}
			return this;
		},
		find:function(selector){
			var doms = [];
			this.each(function(i,dom){
				doms.push(YQ.DOM.find(selector,dom));
			})
			return superElems(doms);
		}
	}
	YQ.each = window.Array.prototype.each = YQ.elems.each;//扩展Array
	YQ.extend = function(subClass,baseClass){
		for(var i in baseClass){
			subClass[i] = baseClass[i];
		}
		return subClass;
	}
	YQ.AJAX = {}
	YQ.CSS = {
		names:{
			'float':'cssFloat',//区分cssFloat or styleFloat
			opacity:'opacity'
			//……
		}
	}
	YQ.browser = {
		isIE:'',
		isFirefox:'',
		version:'3.6'
		//……
	}
	YQ.event = {
		names:{
			mousewheel:YQ.browser?"DOMMouseScroll":"mousewheel"
		},
		fix:function(e){
			if(e && e.clone) return e;//如果已经处理了，直接返回
			e = window.event || e;//event是全局变量
			var fixE = {
				clone:true,
				stop:function(){//冒泡
					if(e&&e.stopPropagation){
						e.stopPropagation();
					}else{
						e.cancleBubble = true
					}
				},
				prevent:function(){//默认动作
					if(e && e.preventDefault){
						e.preventDefault();
					}else{
						e.returnValue = false;
					}
				},
				target:e.target || e.srcElement,
				x:e.clientX || e.pageX,
				Y:e.clientY || e.pageY,
				//鼠标滚轮事件统一处理
				wheel:e.wheelDelta/120 || -e.detail/3
			}
			return fixE;
		}
	}
	YQ.DOM = {
		find:function(selector,parentDom){
			//do something
		}
	}
})(window,document);