/*****************************************************
*   Author:     dada
*   E-Mail:     dada_dotnet@hotmail.com
*   CreateTime: 2008.10.20.1656
*   Version:    2008.11.20.1656
*   Summary:    System.Cookie.js
*****************************************************/


// Namespace
var System; if (!System) System = {};

// Class
System.Cookie = function()
{
    
};

// utility function to retrieve an expiration date in proper
// format; pass three integer parameters for the number of days, hours,
// and minutes from now you want the cookie to expire (or negative
// values for a past date); all three parameters are required,
// so use zeros where appropriate
System.Cookie.getExpDate = function(days, hours, minutes) {
    var expDate = new Date( );
    if (typeof(days) == "number" && typeof(hours) == "number" && typeof(hours) == "number") {
        expDate.setDate(expDate.getDate() + parseInt(days));
        expDate.setHours(expDate.getHours() + parseInt(hours));
        expDate.setMinutes(expDate.getMinutes() + parseInt(minutes));
        return expDate.toGMTString();
    }
}   

// utility function called by System.Cookie.getCookie( )
System.Cookie.getCookieVal = function(offset) {
    var endstr = document.cookie.indexOf(";", offset);
    if (endstr == -1) {
        endstr = document.cookie.length;
    }
    return unescape(document.cookie.substring(offset, endstr));
}   

// primary function to retrieve cookie by name
System.Cookie.getCookie = function(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 System.Cookie.getCookieVal(j);
        }
        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) break; 
    }
    return '';
}

// store cookie value with optional details as needed
System.Cookie.setCookie = function(name, value, expires, path, domain, secure) {
    document.cookie = name + '=' + escape(value) +
        (expires ? '; expires=' + expires : '') +
        (path ? '; path=' + path : '') +
        (domain ? '; domain=' + domain : '') +
        (secure ? '; secure' : '');
}

   

// remove the cookie by setting ancient expiration date
System.Cookie.deleteCookie = function(name,path,domain) {
    if (System.Cookie.getCookie(name)) {
        document.cookie = name + "=" +
            (path ? "; path=" + path : "") +
            (domain ? "; domain=" + domain : "") +
            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}