// JavaScript Document
function isMatch(str1,str2) 
{  
var index = str1.indexOf(str2); 
if(index==-1) return false; 
return true; 
}
function ResumeError() { 
return true; 
} 
window.onerror = ResumeError; 

function $(id) {
    return document.getElementById(id);
}

function showMenu (baseID, divID) {
    baseID = $(baseID);
    divID  = $(divID);

    //var l = GetOffsetLeft(baseID);
    //var t = GetOffsetTop(baseID);

    //divID.style.left = l + 'px';
//    divID.style.top = t + baseID.offsetHeight + 'px';
    if (showMenu.timer) clearTimeout(showMenu.timer);
	hideCur();
    divID.style.display = 'block';
	showMenu.cur = divID;

    if (! divID.isCreate) {
        divID.isCreate = true;
        //divID.timer = 0;
        divID.onmouseover = function () {
            if (showMenu.timer) clearTimeout(showMenu.timer);
			hideCur();
            divID.style.display = 'block';
        };

        function hide () {
            showMenu.timer = setTimeout(function () {divID.style.display = 'none';}, 1000);
        }

        divID.onmouseout = hide;
        baseID.onmouseout = hide;
    }
	function hideCur () {
		showMenu.cur && (showMenu.cur.style.display = 'none');
	}
}

function setTab(m,n){
var menu=document.getElementById("tab"+m).getElementsByTagName("li");
var div=document.getElementById("tablist"+m).getElementsByTagName("div");
var showdiv=[];
for (i=0; j=div[i]; i++){
if ((" "+div[i].className+" ").indexOf(" tablist ")!=-1){
showdiv.push(div[i]);
}
}
for(i=0;i<menu.length;i++)
{
menu[i].className=i==n?"now":"";
showdiv[i].style.display=i==n?"block":"none";
}
}

//=======================
var waitting = 1;
var secondLeft = waitting;
var timer;				
var sourceObj;
var number;
function getObject(objectId)//获取id的函数 
    {
	    if(document.getElementById && document.getElementById(objectId)) {
	    // W3C DOM
	    return document.getElementById(objectId);
	    } else if (document.all && document.all(objectId)) {
	    // MSIE 4 DOM
	    return document.all(objectId);
	    } else if (document.layers && document.layers[objectId]) {
	    // NN 4 DOM.. note: this won't find nested layers
	    return document.layers[objectId];
	    } else {
	    return false;
	    }
    }
function SetTimer()//主导航时间延迟的函数
    {
	    for(j=1; j <10; j++){
		    if (j == number){
		        if(getObject("mm"+j)!=false){
			        getObject("mm"+ number).className = "menuhover";
			        getObject("mb"+ number).className = "";
			    }
		    }
		    else{
		         if(getObject("mm"+j)!=false){ 
			        getObject("mm"+ j).className = "";
			        getObject("mb"+ j).className = "hide"; 
			    }
		    }
	    }
    }
function CheckTime()//设置时间延迟后
    {
	    secondLeft--;
	    if ( secondLeft == 0 )
	    {
	    clearInterval(timer);						
	    SetTimer();		
	    }
    }
function showM(thisobj,Num)//主导航鼠标滑过函数，带时间延迟
    {
	    number = Num;
	    sourceObj = thisobj;
	    secondLeft = 1;
	    timer = setTimeout('CheckTime()',100);
    }
function OnMouseLeft()//主导航鼠标移出函数，清除时间函数
    {
	    clearInterval(timer);
    }
	
	

function getEventObject(W3CEvent) {            //事件标准化函数
    return W3CEvent || window.event;
}


function getPointerPosition(e) {            //兼容浏览器的鼠标x,y获得函数
    e = e || getEventObject(e);
    var x = e.pageX || (e.clientX + (document.documentElement.scrollLeft || document.body.scrollLeft));
    var y = e.pageY || (e.clientY + (document.documentElement.scrollTop || document.body.scrollTop));
    
    return { 'x':x,'y':y };
}

function setOpacity(elem,level) {            //兼容浏览器设置透明值
    if(elem.filters) {
        elem.style.filter = 'alpha(opacity=' + level * 100 + ')';
    } else {
        elem.style.opacity = level;
    }
}

function css(elem,prop) {                //css设置函数,方便设置css值,并且兼容设置透明值
    for(var i in prop) {
        if(i == 'opacity') {
            setOpacity(elem,prop[i]);
        } else {
            elem.style[i] = prop[i];
        }
    }
    return elem;
}

var magnifier = {
    m : null,
    
    init:function(magni){
        var m = this.m = magni || {
            cont : null,        //装载原始图像的div
            img : null,            //放大的图像
            mag : null,            //放大框
            scale : 10            //比例值,设置的值越大放大越大,但是这里有个问题就是如果不可以整除时,会产生些很小的白边,目前不知道如何解决
        }
        
        css(m.img,{    
            'position' : 'absolute',
            'width' : (m.cont.clientWidth * m.scale) + 'px',                //原始图像的宽*比例值    
            'height' : (m.cont.clientHeight * m.scale) + 'px'                //原始图像的高*比例值
            })
        
        css(m.mag,{
            'display' : 'none',
            'width' : m.cont.clientWidth + 'px',            //m.cont为原始图像,与原始图像等宽
            'height' : m.cont.clientHeight + 'px',
            'position' : 'absolute',
            'left' : m.cont.offsetLeft + m.cont.offsetWidth + 10 + 'px',        //放大框的位置为原始图像的右方远10px
            'top' : m.cont.offsetTop + 'px'
            })
        
        var borderWid = m.cont.getElementsByTagName('div')[0].offsetWidth - m.cont.getElementsByTagName('div')[0].clientWidth;        //获取border的宽
        
        css(m.cont.getElementsByTagName('div')[0],{            //m.cont.getElementsByTagName('div')[0]为浏览框
            'display' : 'none',                                //开始设置为不可见
            'width' : m.cont.clientWidth / m.scale - borderWid + 'px',            //原始图片的宽/比例值 - border的宽度
            'height' : m.cont.clientHeight / m.scale - borderWid + 'px',        //原始图片的高/比例值 - border的宽度
            'opacity' : 0.5                    //设置透明度
            })
        
        m.img.src = m.cont.getElementsByTagName('img')[0].src;            //让原始图像的src值给予放大图像
        m.cont.style.cursor = 'crosshair';
        
        m.cont.onmouseover = magnifier.start;
        
    },
    
    start:function(e){
        
        if(document.all){                //只在IE下执行,主要避免IE6的select无法覆盖
            magnifier.createIframe(magnifier.m.img);
        }
        
        this.onmousemove = magnifier.move;        //this指向m.cont
        this.onmouseout = magnifier.end;
    },
    
    move:function(e){
        var pos = getPointerPosition(e);        //事件标准化
        
        this.getElementsByTagName('div')[0].style.display = '';
        
        css(this.getElementsByTagName('div')[0],{
            'top' : Math.min(Math.max(pos.y - this.offsetTop - parseInt(this.getElementsByTagName('div')[0].style.height) / 2,0),this.clientHeight - this.getElementsByTagName('div')[0].offsetHeight) + 'px',
            'left' : Math.min(Math.max(pos.x - this.offsetLeft - parseInt(this.getElementsByTagName('div')[0].style.width) / 2,0),this.clientWidth - this.getElementsByTagName('div')[0].offsetWidth) + 'px'            //left=鼠标x - this.offsetLeft - 浏览框宽/2,Math.max和Math.min让浏览框不会超出图像
            })
        
        magnifier.m.mag.style.display = '';
        
        css(magnifier.m.img,{
            'top' : - (parseInt(this.getElementsByTagName('div')[0].style.top) * magnifier.m.scale) + 'px',
            'left' : - (parseInt(this.getElementsByTagName('div')[0].style.left) * magnifier.m.scale) + 'px'
            })
        
    },
    
    end:function(e){
        this.getElementsByTagName('div')[0].style.display = 'none';
        magnifier.removeIframe(magnifier.m.img);        //销毁iframe
        
        magnifier.m.mag.style.display = 'none';
    },
    
    createIframe:function(elem){
        var layer = document.createElement('iframe');
        layer.tabIndex = '-1';
        layer.src = 'javascript:false;';
        elem.parentNode.appendChild(layer);
        
        layer.style.width = elem.offsetWidth + 'px';
        layer.style.height = elem.offsetHeight + 'px';
    },
    
    removeIframe:function(elem){
        var layers = elem.parentNode.getElementsByTagName('iframe');
        while(layers.length >0){
            layers[0].parentNode.removeChild(layers[0]);
        }
    }
}

window.onload = function(){
    magnifier.init({
                   cont : document.getElementById('magnifier'),
                   img : document.getElementById('magnifierImg'),
                   mag : document.getElementById('mag'),
                   scale : 3
                   });
}