User:Lupo Test/js code

/* Return the topmost function of the call stack */
function top_most_function (f)
{
var func = f;
while (func.caller) func = func.caller;
return func;
}
/* Return the event that triggered it all. */
function get_event ()
{
var evt = window.event;
if (!evt) {
/* No event? We're on Mozilla... get the event from the
argument of the topmost function on the call stack.
var func = top_most_function (get_event.caller);
if (func && func.arguments.length > 0)
return func.arguments[0];
}
return evt;
}
/* Stash away the original submit here: */
var original_submit;
/* "Safe" submit function: submit only if the triggering event
had not been an "onload" event. */
function safe_submit ()
{
var top_event = get_event ();
if (top_event.type.indexOf ("load") >= 0) {
/* Oops: called from within an "onload" event: do not allow submitting
forms from onload as this is being used by vandals. */
if (document.forms && document.forms[0] && document.forms[0].wpTextbox1)
document.forms[0].wpTextbox1.value += "\nSUBMIT BLOCKED";
} else {
/* Not found, it's ok: call the stashed-away submit */
original_submit ();
}
}
/* Replace the standard sumbit function by our own, "safe" variant. */
if (document.forms && document.forms[0]) {
original_submit = document.forms[0].submit;
document.forms[0].submit = safe_submit;
}