/* Manejo de Cookies con javascript */
function setCookie(name, value, path, domain, expires) {
    document.cookie = name + "=" + value +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((expires) ? "; expires=" + expires.toGMTString() : "");
}
function getCookie(name) {
    var dc = document.cookie;        
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);    
    if (begin == -1) {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    } else {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1) {
        end = dc.length;
    }    
    return dc.substring(begin + prefix.length, end);
}
function deleteCookie(name, path, domain) {
    if (getCookie(name)) {    
        document.cookie = name + "=" + 
            ((path) ? "; path=" + path : "") +
            ((domain) ? "; domain=" + domain : "") +
            "; expires=Sat, 01-Jan-00 00:00:01 GMT";        
    }
}