// JavaScript Document
var isIE=true;
if(window.navigator.userAgent.indexOf("MSIE")==-1){ //firefox innerText define
   isIE=false;
	 HTMLElement.prototype.__defineGetter__(    "innerText", 
        function(){ 
            return this.textContent; 
        } 
    ); 
    HTMLElement.prototype.__defineSetter__(    "innerText", 
        function(sText){ 
            this.textContent=sText; 
        } 
    ); 
		
}

String.prototype.Trim = function(){return   this.replace(/(^\s*)|(\s*$)/g,"");}   
String.prototype.Ltrim = function(){return   this.replace(/(^\s*)/g,   "");}   
String.prototype.Rtrim = function(){return   this.replace(/(\s*$)/g,   "");} 

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

function ReadUserID()
{
	var cookieValue=  document.cookie.split("; "); 
	var startPos = -1;
	var lstr="";
	for (var i=0; i<cookieValue.length; i++)
   {
        startPos = cookieValue[i].indexOf("Disscuss");
        if (startPos != 0)continue; 
       	lstr = cookieValue[i].substring(startPos+9, cookieValue[i].length);
				break;
	}
	cookieValue = lstr.split("&");
	for(var i=0;i<cookieValue.length;i++)
	{
		startPos = cookieValue[i].indexOf("userID");
        if (startPos != 0)continue; 
		return cookieValue[i].substring(startPos+7,cookieValue[i].length);
	}
	return "";
}

function ReadUserNo()
{
	var cookieValue=  document.cookie.split("; "); 
	var startPos = -1;
	var lstr="";
	for (var i=0; i<cookieValue.length; i++)
   {
        startPos = cookieValue[i].indexOf("Disscuss");
        if (startPos != 0)continue; 
       	lstr = cookieValue[i].substring(startPos+9, cookieValue[i].length);
				break;
	}
	cookieValue = lstr.split("&");
	for(var i=0;i<cookieValue.length;i++)
	{
		startPos = cookieValue[i].indexOf("userNo");
        if (startPos != 0)continue; 
		return cookieValue[i].substring(startPos+7,cookieValue[i].length);
	}
	return "";
}

function ReadUserGrade()
{
	var cookieValue=  document.cookie.split("; "); 
	var startPos = -1;
	var lstr="";
	for (var i=0; i<cookieValue.length; i++)
   {
        startPos = cookieValue[i].indexOf("Disscuss");
        if (startPos != 0)continue; 
       	lstr = cookieValue[i].substring(startPos+9, cookieValue[i].length);
				break;
	}
	cookieValue = lstr.split("&");
	for(var i=0;i<cookieValue.length;i++)
	{
		startPos = cookieValue[i].indexOf("grade");
        if (startPos != 0)continue; 
		return cookieValue[i].substring(startPos+6,cookieValue[i].length);
	}
	return "";
}

function ReadUserNickName()
{
	var cookieValue=  document.cookie.split("; "); 
	var startPos = -1;
	var lstr="";
	for (var i=0; i<cookieValue.length; i++)
   {
        startPos = cookieValue[i].indexOf("Disscuss");
        if (startPos != 0)continue; 
       	lstr = cookieValue[i].substring(startPos+9, cookieValue[i].length);
				break;
	}
	cookieValue = lstr.split("&");
	for(var i=0;i<cookieValue.length;i++)
	{
		startPos = cookieValue[i].indexOf("nickname");
        if (startPos != 0)continue; 
		return cookieValue[i].substring(startPos+9,cookieValue[i].length);
	}
	return "";
}

function ReadUserArea()
{
	var cookieValue=  document.cookie.split("; "); 
	var startPos = -1;
	var lstr="";
	for (var i=0; i<cookieValue.length; i++)
   {
        startPos = cookieValue[i].indexOf("Disscuss");
        if (startPos != 0)continue; 
       	lstr = cookieValue[i].substring(startPos+9, cookieValue[i].length);
				break;
	}
	cookieValue = lstr.split("&");
	for(var i=0;i<cookieValue.length;i++)
	{
		startPos = cookieValue[i].indexOf("uarea");
        if (startPos != 0)continue; 
		return cookieValue[i].substring(startPos+6,cookieValue[i].length);
	}
	return "";
}
 
function createXmlHttp() 
{
	try
	{
		return window.ActiveXObject ? new ActiveXObject("MSXML2.XMLHTTP.3.0") : new XMLHttpRequest();
	}
	catch(e)
	{
		alert("您当前的浏览器不支持该购买程序，请用IE5.0以上版本");
		return null;
	}
}

function checkImg(obj)
{
	if(obj.width>400)
	{
		obj.height =400 /obj.width * obj.height; 
		obj.width=400;
	}
}


function getCookieValue(cookieName)
{
	var cookieValue=  document.cookie.split("; "); 
	var startPos = -1;
	var str="";
	for (var i=0; i<cookieValue.length; i++)
	 {
				startPos = cookieValue[i].indexOf(cookieName);
				if (startPos != 0)continue; 
				str = cookieValue[i].substring(cookieName.length+1, cookieValue[i].length);
				break;
	}
	return str;
	
}