function getCookieVal(offset) {
    var endstr = document.cookie.indexOf (";", offset);
    if (endstr == -1) {
        endstr = document.cookie.length;
    }

    return document.cookie.substring(offset, endstr);
}
function setCookie(name, value) {
    document.cookie = name + "=" + value + ";path=/";
}

function getCookie(name)
{
    var arg = name + "=";
    var alen = arg.length;
    var cookieLength = document.cookie.length;

    var i = 0;
    while (i < cookieLength) {
        var j = i + alen;
        if (document.cookie.substring(i, j) == arg) {
            return getCookieVal(j);
        }
        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) break;
    }
	
    return "";
}
	
function deleteCookie(name) {
    if (getCookie(name)) {
        document.cookie = name + "=";
    }
}