function SetBaseStyleSheetFromCookie(defaultColor) 
{
    if (!get_cookie("CodeLakeThemeColor"))
    {
        SetBaseStyleSheet(defaultColor);
    }
    else
    {
        var savedColor = get_cookie("CodeLakeThemeColor");
        SetBaseStyleSheet(savedColor);
    }
}

function SetBaseStyleSheet(newColor) 
{
    theDiv = document.getElementById("divMainBase");    
    if (theDiv)
    {   
        theDiv.className = 'base_' + newColor;
    }
    
    set_cookie("CodeLakeThemeColor", newColor, 2099, 12, 31);
}

function get_cookie(cookie_name)
{
    var results = document.cookie.match ( '(^|;) ?' + cookie_name + '=([^;]*)(;|$)' );
    if (results)
        return (unescape(results[2]));
    else
        return null;
}

function set_cookie(name, value, exp_y, exp_m, exp_d, path, domain, secure)
{
    var cookie_string = name + "=" + escape (value);
    if (exp_y)
    {
        var expires = new Date(exp_y, exp_m, exp_d);
        cookie_string += "; expires=" + expires.toGMTString();
    }
    
    if (path)
        cookie_string += "; path=" + escape(path);

    if (domain)
        cookie_string += "; domain=" + escape(domain);
  
    if (secure)
        cookie_string += "; secure";
  
    document.cookie = cookie_string;
}

function delete_cookie(cookie_name)
{
    var cookie_date = new Date();
    cookie_date.setTime(cookie_date.getTime() - 1);
    document.cookie = cookie_name += "=; expires=" + cookie_date.toGMTString();
}