function setcookies(name, value, expirationInDays) {
if (expirationInDays) {
var date = new Date();
date.setTime(date.getTime() + (expirationInDays * 24 * 60 * 60 * 1000));
var expires = "; expires=" + date.toGMTString();
} else {
var expires = "";
}
document.cookie = name + "=" + value + expires + "; path=/";
}

function getcookies(name) {
var namePattern = name + "=";
var cookies = document.cookie.split(';');
for(var i = 0, n = cookies.length; i < n; i++) {
var c = cookies[i];
while (c.charAt(0) == ' ') c = c.substring(1, c.length);
if (c.indexOf(namePattern) == 0)
return c.substring(namePattern.length, c.length);
}
return null;
}

function erasecookies(name) {
createCookie(name, "", -1);
}