Handle cookies in javascript

Here's an object to manipulate cookies, you can set, get or delete a cookie.

function CookieHandler() {

this.setCookie = function (name, value, seconds) {

if (typeof(seconds) != 'undefined') {
var date = new Date();
date.setTime(date.getTime() + (seconds*1000));
var expires = "; expires=" + date.toGMTString();
}
else {
var expires = "";
}

document.cookie = name+"="+value+expires+"; path=/";
}

this.getCookie = function (name) {

name = name + "=";
var carray = document.cookie.split(';');

for(var i=0;i < carray.length;i++) {
var c = carray[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(name) == 0) return c.substring(name.length,c.length);
}

return null;
}

this.deleteCookie = function (name) {
this.setCookie(name, "", -1);
}

}