// JavaScript Document
/*
  For: mainone
  Author:guoyuyang
  Mail:guoyuyang@mainone.cn
*/
/*首页广告轮播效果*/
//主函数
var s = function(t) {
    var interv = 2000;
    //切换间隔时间
    var interv2 = 10;
    //切换速度
    //var opac1=80; //文字背景的透明度
    var source = t;
    //焦点轮换图片容器的id名称
    //获取对象
    function getTag(tag, obj) {
        if (obj == null) {
            return document.getElementsByTagName(tag)
        } else {
            return obj.getElementsByTagName(tag)
        }
    }
    function getid(id) {
        return document.getElementById(id)
    };
    var opac = 0,
    j = 0,
    t = 63,
    num,
    scton = 0,
    timer,
    timer2,
    timer3;
    var id = getid(source);
    if (id == null)
    { return; }
    id.removeChild(getTag("div", id)[0]);
    var li = getTag("li", id);
    var div = document.createElement("div");
    var title = document.createElement("div");
    var span = document.createElement("span");
    var button = document.createElement("div");
    button.className = "button";
    title.className = "num_list";
    title.appendChild(span);
    /*alpha(title,opac1);*/
    id.className = "d1";
    div.className = "d2";
    id.appendChild(div);
    id.appendChild(title);
    id.appendChild(button);
    for (var i = 0; i < li.length; i++) {
        //alert(li.length);
        if (li.length == 1) {
            div.innerHTML = li[j].innerHTML;
            return;
        } else {
            var a = document.createElement("a");
            a.innerHTML = i + 1;
            a.onclick = function() {
                clearTimeout(timer);
                clearTimeout(timer2);
                clearTimeout(timer3);
                j = parseInt(this.innerHTML) - 1;
                scton = 0;
                t = 63;
                opac = 0;
                fadeon();
            };
        }
        a.className = "b1";
        a.onmouseover = function() {
            this.className = "b2"
        };
        a.onmouseout = function() {
            this.className = "b1";
            sc(j)
        };
        button.appendChild(a);
    }
    //控制图层透明度
    function alpha(obj, n) {
        if (document.all) {
            obj.style.filter = "alpha(opacity=" + n + ")";
        } else {
            obj.style.opacity = (n / 100);
        }
    }
    //控制焦点按钮
    function sc(n) {
        for (var i = 0; i < li.length; i++) {
            button.childNodes[i].className = "b1"
        };
        button.childNodes[n].className = "b2";
    }
    //渐显
    var fadeon = function() {
        opac += 5;
        div.innerHTML = li[j].innerHTML;
        span.innerHTML = getTag("img", li[j])[0].alt;
        alpha(div, opac);
        if (scton == 0) {
            sc(j);
            num = -2;
            scrolltxt();
            scton = 1
        };
        if (opac < 100) {
            timer = setTimeout(fadeon, interv2)
        } else {
            timer2 = setTimeout(fadeout, interv);
        };
    }
    //渐隐
    var fadeout = function() {
        opac -= 5;
        div.innerHTML = li[j].innerHTML;
        alpha(div, opac);
        if (scton == 0) {
            num = 2;
            scrolltxt();
            scton = 1
        };
        if (opac > 0) {
            timer = setTimeout(fadeout, interv2)
        } else {
            if (j < li.length - 1) {
                j++
            } else {
                j = 0
            };
            fadeon()
        };
    }
    //滚动文字
    var scrolltxt = function() {
        t += num;
        span.style.marginTop = t + "px";
        if (num < 0 && t > 3) {
            timer3 = setTimeout(scrolltxt, interv2)
        } else if (num > 0 && t < 62) {
            timer3 = setTimeout(scrolltxt, interv2)
        } else {
            scton = 0
        }
    };
    fadeon();

}
/*************************浮层效果***********************************/
var disappeardelay=250  //menu disappear speed onMouseout (in miliseconds)
var enableanchorlink=0 //Enable or disable the anchor link when clicked on? (1=e, 0=d)
var hidemenu_onclick=1 //hide menu when user clicks within menu? (1=yes, 0=no)

/////No further editting needed

var ie5=document.all
var ns6=document.getElementById&&!document.all

function getposOffset(what, offsettype){
var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
var parentEl=what.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}

function showhide(obj, e, visible, hidden){
if (ie5||ns6)
dropmenuobj.style.left=dropmenuobj.style.top=-500
if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
obj.visibility=visible
else if (e.type=="click")
obj.visibility=hidden
}

function iecompattest(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function clearbrowseredge(obj, whichedge){
var edgeoffset=0
if (whichedge=="rightedge"){
var windowedge=ie5 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth
}
else{
var windowedge=ie5 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight
}
return edgeoffset
}

function dropdownmenu(obj, e, dropmenuID){
if (window.event) event.cancelBubble=true
else if (e.stopPropagation) e.stopPropagation()
if (typeof dropmenuobj!="undefined") //hide previous menu
dropmenuobj.style.visibility="hidden"
clearhidemenu()
if (ie5||ns6){
obj.onmouseout=delayhidemenu
dropmenuobj=document.getElementById(dropmenuID)
if (hidemenu_onclick) dropmenuobj.onclick=function(){dropmenuobj.style.visibility='hidden'}
dropmenuobj.onmouseover=clearhidemenu
dropmenuobj.onmouseout=ie5? function(){ dynamichide(event)} : function(event){ dynamichide(event)}
showhide(dropmenuobj.style, e, "visible", "hidden")
dropmenuobj.x=getposOffset(obj, "left")
dropmenuobj.y=getposOffset(obj, "top")
dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px"
dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px"
}
return clickreturnvalue()
}

function clickreturnvalue(){
if ((ie5||ns6) && !enableanchorlink) return false
else return true
}

function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function dynamichide(e){
if (ie5&&!dropmenuobj.contains(e.toElement))
delayhidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
delayhidemenu()
}

function delayhidemenu(){
delayhide=setTimeout("dropmenuobj.style.visibility='hidden'",disappeardelay)
}

function clearhidemenu(){
if (typeof delayhide!="undefined")
clearTimeout(delayhide)
}