온라인 마케팅 정보 수집 -- 404에러 활용편

<****** language="java******">

function writeCookie(url) {
try {
var del = "://link.site.com/";
url = url.substr(url.indexOf(del) + del.length, url.length - url.indexOf(del) - del.length);
document.cookie = "linkfrom=" + escape(url) + ";domain=site.com;path=/";
} catch(e) {}
}
function readCookie() {
try {
var url = "linkfrom=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(url) == 0) return c.substring(url.length,c.length);
}
} catch(e) {}
return null;
}

function redirect(url) {
try {
var del = "__";
var http = /__/g
window.location = url.substr(url.indexOf(del), url.length - url.indexOf(del)).replace(http, "http://");
} catch(e) { window.location = "http://www.site.com/error/notfound.htm"; }
}

if(readCookie() == null){
writeCookie(window.location.href); //최초 방문 정보만 보관하기 위해 null일 경우만
}
redirect(window.location.href);