@deprecated As of release 5.0.0, replaced with{@link #interpret(String,String,Scope)}.
Interpret a script of the specified scripting language against the specified namespace.
@param zslang the scripting language. If null, {@link #getZScriptLanguage}is assumed.
@param ns the namspace. If null, the current namespace is assumed.The current namespace is the event target's namespace ( {@link org.zkoss.zk.ui.event.Event#getTarget}), if the thread is processing an event. Otherwise, the current namespace is this page's namespace