function CambiaEstilo(objLi)
{
    if (objLi.className == "oculto")
        objLi.className = "visible";
    else if (objLi.className == "actual")
    	objLi.className = "actual-oculto";
    else if (objLi.className == "actual-oculto")
    	objLi.className = "actual";
    else
        objLi.className = "oculto";
}

function popUp(URL,WIDTH, HEIGHT) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=" + WIDTH +",height=" + HEIGHT + "');");
}