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

function getCookie(name)
{
        var arg = name + "=";
        var alen = arg.length;
        var clen = document.cookie.length;
        var i= 0;
        while (i<clen)
        {
                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 null;
}

function setCookie(name,value)
{
        var argv = setCookie.arguments;
        var argc = setCookie.arguments.length;
        var expires = (2<argc)? argv[2]:null;
        var path = (3<argc)?argv[3]:null;
        var domain = (4<argc)?argv[4]:null;
        var secure = (5<argc)?argv[5]:null;

        document.cookie = name+"="+escape(value)+((expires == null)?" ":(";expires ="+expires.toGMTString()))+((path == null)?"  ":(";path = "+path))+((domain == null)?" ":(";domain =" +domain)) +((secure==true)?";secure":" ");
}