/**
* 根据cookie名称来获得cookie的值
* @param name:cookie名称
*/
function getCookie(name){ 
	if(document.cookie.length > 0){
		start = document.cookie.indexOf(name + "="); 
		if( start != -1){ 
			start = start +name.length + 1; 
			end = document.cookie.indexOf(";",start); 
			if( end == -1){ 
				end = document.cookie.length; 
			} 
		return decodeURI(document.cookie.substring(start,end)); 
		} 
	} 
	return ""; 
} 
/**
* 存入cookie
* @param name:cookie名称
* @param value:cookie值
* @param expires:cookie过期时间
* @param path:cookie路径
* @param domain:cookie域
* @param secure:cookie安全
*/
function setCookie(name, value, expires, path, domain, secure){ 
	var curcookie = name + "=" +encodeURI(value) 
	+ ((expires) ? ";expires=" + expires.toGMTString() : "") 
	+ ((path) ? ";path=" + path : "") 
	+ ((domain) ? ";domain=" + domain : "") 
	+ ((secure) ? ";secure" : ""); 
	document.cookie = curcookie; 						//存入cookie
} 

function start(){ 
	var lastUrl= "" ;
	var domain = ".iwommaster.com" ;					//设置跨域 默认是.iwommaster.com
	if(document.location.host.indexOf("iwommaster.internal")!=-1){ //取得当前域名做判断
		domain = ".iwommaster.internal" ;
	}
	lastUrl = document.referrer ;						//前一个页面的路径地址
	var visitorValue = getCookie("SOURCE_URL"); 			//从cookie名称取出来的cookie的值
	var today = new Date(); 							//当前时间
	today.setTime(today.getTime() + 30*24*60*60*1000);  //有效期为30天
	if(visitorValue =="") { 
		setCookie("SOURCE_URL",lastUrl,today,"/",domain,""); //添加cookie设置跨域.iwommaster.com
	}else{
		if(visitorValue.indexOf(lastUrl)!=-1){      //如果存在就不做任何事情
		}else{
			//setCookie("SOURCE_URL",lastUrl+visitorValue,today,"/",domain,"");   //否则就添加cookie设置跨域.iwommaster.com
		}
	}
} 
start();