var nav = {
	navSelectClassName:'selectNav',    //菜单选中时样式
	subSelectClassName:'selectChild',  //子菜单选中时样式
	subObj:'childnavShow',             //子菜单所在对象ID
	navOn:'navMenu',
	subOn:'subMenu',
	menuBox:'menuBox',
		
	//当前页面显示菜单
	onPage:function(navId,subId){
		var oNav =$(navId);
		oNav.className = this.navSelectClassName;
		nav.subShow(oNav);
		if(subId.length>1){
			var oSub =$(subId);
			oSub.className =this.subSelectClassName;
		}
	},
	
	//鼠标滑过菜单变化
	mouseover:function(){
		var oNavOn = $(this.navOn);
		var navAo =oNavOn.getElementsByTagName('a');
		for (var i=0; i<navAo.length; i++){
			navAo[i].onmouseover=function(e) {
				var evtobj=window.event? window.event : e;
				//console.dir(evtobj);
				//console.info(evtobj.layerX);
				//console.info(evtobj.clientX);
				nav.subShow(this);
			}
		}
	},
	
	//鼠标移出menuBox时,nav恢复预载状态
	mouseout:function(navId,subId){
		var oMenuBox =$(this.menuBox);
		oMenuBox.onmouseout=function(e){
			//var evtobj=window.event? window.event : e;
			//alert(evtobj.srcElement);
			nav.delayShowDefaultSub(navId,subId);
		}
	},
	
	//延迟显示默认menu
	delayShowDefaultSub:function(navId,subId){
		setTimeout("nav.onPage('"+navId+"','"+subId+"')",15500);
	},
	
	//调出子菜单
	subShow:function(navId){
		var oNav =$(navId);
		var oSubUl =$(this.subObj);
		var getSubObj =$(oNav.getAttribute("child"));
		oSubUl.innerHTML = getSubObj.innerHTML;
		var adjust = getPosition($(this.subOn));
		var adjustLeft = adjust.left;
		var position = getPosition(oNav);
		var adjustX =100;
		
		//if(oNav.id !="inbox") {adjustX =70};
		if(oNav.id =="help") {adjustX =220};
		oSubUl.style.marginLeft = position.left - adjustLeft -adjustX + "px";
		//console.info(position.left);
	},
	
	//页面内一级菜单
	linkMouseClick:function(linkMenuId){
		var obj =$(linkMenuId);
		var oLi =obj.getElementsByTagName('li');
		for (var j =0; j<oLi.length;j++){
			oLi[j].onclick =function(){
				for ( var i=0;i<oLi.length;i++){
					oLi[i].className ="";
				}
				this.className ="linkMenuSelcted";
			}
		}
	},
	
	//初始化
	intl:function(navId,subId){
		nav.onPage(navId,subId);
		nav.mouseover();
		//nav.mouseout(navId,subId);
	}
}