/* -- global functions -- */
function obj(id) { return document.getElementById(id); }
function setFocus(id) { setTimeout("setFocusEx('" + id + "');", 200); }
function setFocusEx(id) { var o = obj(id); if (o) { o.focus(); if (o.select) o.select(); } }

/* -- reservation form -- */
function setSeating() {
    var oRoom = document.getElementById("ctl00_PageContent_lstRoom"); if (!oRoom) oRoom = document.getElementById("ctl00_PageContent_lstReservedRoom");
    oRoom.onchange = Room_onChange;
    Room_onChange();
}
function Room_onChange() {
    var oRoom = document.getElementById("ctl00_PageContent_lstRoom"); if (!oRoom) oRoom = document.getElementById("ctl00_PageContent_lstReservedRoom");
    var oSeating = document.getElementById("ctl00_PageContent_lstSeating");
    oSeating.disabled = oRoom.options[oRoom.selectedIndex].value != 2;
}