function getCookie(name) {
if (document.cookie.length>0) {
var start = document.cookie.indexOf(name + '=');
if (-1 != start) {
start=start + name.length+1;
var end = document.cookie.indexOf(';', start);
if (-1 == end) end=document.cookie.length;
return document.cookie.substring(start, end);
}
}
return null;
}
function setCookie(key, value, path, second) {
if (null == value) value = '';
var p = '';
if (path) p = '; path=' + path;
var time = '';
if (null != second) {
var date = new Date();
date.setTime(date.getTime() + second * 1000);
time = '; expires=' + date.toGMTString();
}
document.cookie = key + '=' + value + p + time;
}
function deleteCookie(key) {
document.cookie = key + '=; expires=' + new Date().toGMTString();
}
