// JavaScript Document
function AddFavorite(sURL,sTitle)
{
    try
    {
        window.external.addFavorite(sURL, sTitle);
    }
    catch (e)
    {
        try
        {
            window.sidebar.addPanel(sTitle, sURL, "");
        }
        catch (e)
        {
            alert("加入收藏失败，请使用Ctrl+D进行添加");
        }
    }
}
function SetHome(obj,vrl){
        try{
                obj.style.behavior='url(#default#homepage)';obj.setHomePage(vrl);
        }
        catch(e){
                if(window.netscape) {
                        try {
                                netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
                        }
                        catch (e) {
                                alert("此操作被浏览器拒绝！\n请在浏览器地址栏输入“about:config”并回车\n然后将 [signed.applets.codebase_principal_support]的值设置为'true',双击即可。");
                        }
                        var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
                        prefs.setCharPref('browser.startup.homepage',vrl);
                 }
        }
}

 
//广告
function writeaDs(t,f){
 	document.getElementById(t).innerHTML = document.getElementById(f).innerHTML;
	document.getElementById(f).innerHTML = ""
}
//获取元素
function $(id){ return document.getElementById(id)}

//交替显示
function alternatelybg(o,a,b,c,d){ 
//var t=$(o).getElementsByTagName("li");
var t=document.getElementById(o).getElementsByTagName("li");
// var t= document.getElementById("kclist").getElementsByTagName("li");
 
for(var i=0;i<t.length;i++){
t[i].style.backgroundColor=(t[i].sectionRowIndex%2==0)?a:b;
t[i].onclick=function(){
if(this.x!="1"){
this.x="1";//本来打算直接用背景色判断，FF获取到的背景是RGB值，不好判断
this.style.backgroundColor=d;
}else{
this.x="0";
this.style.backgroundColor=(this.sectionRowIndex%2==0)?a:b;
}
}
t[i].onmouseover=function(){
if(this.x!="1")this.style.backgroundColor=c;
}
t[i].onmouseout=function(){
if(this.x!="1")this.style.backgroundColor=(this.sectionRowIndex%2==0)?a:b;
}
}
}
//颜色选择
function colorpicker(cid) {
	var sColor = dlgHelper.ChooseColorDlg();
	cid.value = sColor.toString(16);
}
//城市 
function refreshkc(cdiv)
{
    lhgdialog.opendlg( '更新我的最近的课程', '../school/refkc.php?btn='+cdiv, 650, 420,true );
}
function IsBrowser(){
	var sAgent = navigator.userAgent.toLowerCase() ;
	if ( sAgent.indexOf("msie") != -1 && sAgent.indexOf("mac") == -1 && sAgent.indexOf("opera") == -1 )
		return "msie" ;
	if ( navigator.product == "Gecko" && !( typeof(opera) == 'object' && opera.postError ) )
		return "gecko";
	if ( navigator.appName == 'Opera')
		return "opera" ;
	if ( sAgent.indexOf( 'safari' ) != -1 )
		return "safari";
	return false ;
}
//上传图片
function selectImg(cpath,inputname){
lhgdialog.opendlg("上传图片","../require/uploadpic.php?path="+cpath+"&img="+inputname+"", 400, 200,true );	
} 

function topsearch(){   
if($("keyword").value=='请输入您要搜索的关键字'){$("keyword").value='';return false;}
 
}
//设置字体
function SetFont(size){ 
	$("articleContent").style.fontSize=size
}

//更新点击
// JavaScript Document
function initxmlhttp()
{
  var xmlhttp
  try {
    xmlhttp=new ActiveXObject("Msxml2.XMLHTTP");
   } catch (e) {
     try {
        xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
     } catch (E) {
        xmlhttp=false;
     }
  }
if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
        try {
                xmlhttp = new XMLHttpRequest();
        } catch (e) {
                xmlhttp=false;
        }
}
if (!xmlhttp && window.createRequest) {
        try {
                xmlhttp = window.createRequest();
        } catch (e) {
                xmlhttp=false;
        }
}
  return xmlhttp;
}
// 
function readcontent(gurl,cid)
{ 
  var xmlhttp=initxmlhttp();
  var showcontent=document.getElementById(cid);
  var showload=document.getElementById(cid+'load');
  var url=gurl;
  xmlhttp.open("GET",url,true);
  xmlhttp.onreadystatechange=function(){
     if(xmlhttp.readyState==4 && xmlhttp.status==200)
         {
           var callbacktxt=xmlhttp.responseText;
			if(callbacktxt.indexOf("您已经评价过了,谢谢！")!=-1){
				  alert("您已经评价过了,谢谢！");
			}else if(callbacktxt.indexOf("您已评价成功,谢谢！")!=-1){
				alert("您已评价成功,谢谢！");
				//格式  您已评价成功,谢谢！|34|53
				var backvalue = callbacktxt.split("|",3);
				//lastIndexOf
				
			 
			//var	loadshow = callbacktxt.substr(callbacktxt.lastIndexOf("|"));
				var loadwidth=backvalue[1];
				var loadshow=backvalue[2]
  				
				 showcontent.innerHTML=loadshow;
				 showload.style.width = loadwidth+'px';
				}
			else{
				
				
				if(callbacktxt.indexOf("|")!=-1){
					var backvalue = callbacktxt.split("|",3);
					var loadwidth=backvalue[1];
					var loadshow=backvalue[2];
 				showcontent.innerHTML=loadshow;
				 showload.style.width = loadwidth+'px';
				}else{
					showcontent.innerHTML=callbacktxt;
					}
				
				}	
         }
  }
  xmlhttp.send(null);
}

var Url = document.URL;
  function copyUrl()
  {  
  window.clipboardData.setData("Text",Url );
  alert("复制成功，请粘贴到你的QQ/MSN上推荐给你的好友！\r\n\r\n内容如下：\r\n" + Url);
  }
  
// 
function writecontent()
{
  var xmlhttp=initxmlhttp();
  var content=document.forms[0].content.value;
  var url="writefile.php";
  var poststr="content="+content;
  
  xmlhttp.open("POST",url,true);
  xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
  xmlhttp.send(poststr); 
}
//弹出层
var isIE = (document.all) ? true : false;

var isIE6 = isIE && ([/MSIE (\d)\.0/i.exec(navigator.userAgent)][0][1] == 6);

var $ = function (id) {
	return "string" == typeof id ? document.getElementById(id) : id;
};

var Class = {
	create: function() {
		return function() { this.initialize.apply(this, arguments); }
	}
}

var Extend = function(destination, source) {
	for (var property in source) {
		destination[property] = source[property];
	}
}

var Bind = function(object, fun) {
	return function() {
		return fun.apply(object, arguments);
	}
}

var Each = function(list, fun){
	for (var i = 0, len = list.length; i < len; i++) { fun(list[i], i); }
};

var Contains = function(a, b){
	return a.contains ? a != b && a.contains(b) : !!(a.compareDocumentPosition(b) & 16);
}


var OverLay = Class.create();
OverLay.prototype = {
  initialize: function(options) {

	this.SetOptions(options);
	
	this.Lay = $(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(isIE6){
		this.Lay.style.position = "absolute";
		//ie6设置覆盖层大小程序
		this._resize = 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";
		});
		//遮盖select
		this.Lay.innerHTML = '<iframe style="position:absolute;top:0;left:0;width:100%;height:100%;filter:alpha(opacity=0);"></iframe>'
	}
  },
  //设置默认属性
  SetOptions: function(options) {
    this.options = {//默认值
		Lay:		null,//覆盖层对象
		Color:		"#fff",//背景色
		Opacity:	50,//透明度(0-100)
		zIndex:		1000//层叠顺序
    };
    Extend(this.options, options || {});
  },
  //显示
  Show: function() {
	//兼容ie6
	if(isIE6){ this._resize(); window.attachEvent("onresize", this._resize); }
	//设置样式
	with(this.Lay.style){
		//设置透明度
		isIE ? filter = "alpha(opacity:" + this.Opacity + ")" : opacity = this.Opacity / 100;
		backgroundColor = this.Color; display = "block";
	}
  },
  //关闭
  Close: function() {
	this.Lay.style.display = "none";
	if(isIE6){ window.detachEvent("onresize", this._resize); }
  }
};



var LightBox = Class.create();
LightBox.prototype = {
  initialize: function(box, options) {
	
	this.Box = $(box);//显示层
	
	this.OverLay = new OverLay(options);//覆盖层
	
	this.SetOptions(options);
	
	this.Fixed = !!this.options.Fixed;
	this.Over = !!this.options.Over;
	this.Center = !!this.options.Center;
	this.onShow = this.options.onShow;
	
	this.Box.style.zIndex = this.OverLay.zIndex + 1;
	this.Box.style.display = "none";
	
	//兼容ie6用的属性
	if(isIE6){
		this._top = this._left = 0; this._select = [];
		this._fixed = Bind(this, function(){ this.Center ? this.SetCenter() : this.SetFixed(); });
	}
  },
  //设置默认属性
  SetOptions: function(options) {
    this.options = {//默认值
		Over:	true,//是否显示覆盖层
		Fixed:	false,//是否固定定位
		Center:	false,//是否居中
		onShow:	function(){}//显示时执行
	};
    Extend(this.options, options || {});
  },
  //兼容ie6的固定定位程序
  SetFixed: function(){
	this.Box.style.top = document.documentElement.scrollTop - this._top + this.Box.offsetTop + "px";
	this.Box.style.left = document.documentElement.scrollLeft - this._left + this.Box.offsetLeft + "px";
	
	this._top = document.documentElement.scrollTop; this._left = document.documentElement.scrollLeft;
  },
  //兼容ie6的居中定位程序
  SetCenter: function(){
	this.Box.style.marginTop = document.documentElement.scrollTop - this.Box.offsetHeight / 2 + "px";
	this.Box.style.marginLeft = document.documentElement.scrollLeft - this.Box.offsetWidth / 2 + "px";
  },
  //显示
  Show: function(options) {
	//固定定位
	this.Box.style.position = this.Fixed && !isIE6 ? "fixed" : "absolute";

	//覆盖层
	this.Over && this.OverLay.Show();
	
	this.Box.style.display = "block";
	
	//居中
	if(this.Center){
		this.Box.style.top = this.Box.style.left = "50%";
		//设置margin
		if(this.Fixed){
			this.Box.style.marginTop = - this.Box.offsetHeight / 2 + "px";
			this.Box.style.marginLeft = - this.Box.offsetWidth / 2 + "px";
		}else{
			this.SetCenter();
		}
	}
	
	//兼容ie6
	if(isIE6){
		if(!this.Over){
			//没有覆盖层ie6需要把不在Box上的select隐藏
			this._select.length = 0;
			Each(document.getElementsByTagName("select"), Bind(this, function(o){
				if(!Contains(this.Box, o)){ o.style.visibility = "hidden"; this._select.push(o); }
			}))
		}
		//设置显示位置
		this.Center ? this.SetCenter() : this.Fixed && this.SetFixed();
		//设置定位
		this.Fixed && window.attachEvent("onscroll", this._fixed);
	}
	
	this.onShow();
  },
  //关闭
  Close: function() {
	this.Box.style.display = "none";
	this.OverLay.Close();
	if(isIE6){
		window.detachEvent("onscroll", this._fixed);
		Each(this._select, function(o){ o.style.visibility = "visible"; });
	}
  }
};