function setCookie(sName, sValue, oExpires, sPath, sDomain, bSecure) 
{
    var sCookie = sName + "=" + encodeURIComponent(sValue);

    if (oExpires)
        sCookie += "; expires=" + oExpires.toGMTString();

    if (sPath) 
        sCookie += "; path=" + sPath;

    if (sDomain) 
        sCookie += "; domain=" + sDomain;

    if (bSecure) 
        sCookie += "; secure";

    document.cookie = sCookie;
}
                
function getCookie(sName) 
{
    var sRE = "(?:; )?" + sName + "=([^;]*);?";
    var oRE = new RegExp(sRE);
    
    if (oRE.test(document.cookie)) 
        return decodeURIComponent(RegExp["$1"]);
    else 
        return null;

}                

function deleteCookie(sName, sPath, sDomain) 
{
    var sCookie = sName + "=; expires=" + (new Date(0)).toGMTString();
    if (sPath) 
        sCookie += "; path=" + sPath;

    if (sDomain) 
        sCookie += "; domain=" + sDomain;
    
    document.cookie = sCookie;
}