flash actionscript: Really simple question, take a look at the script I am using:

_root.end = setInterval(function() {
clearInterval(_root.end);
gotoAndStop(20);
trace('end----------');
}, 1500);

Why does it keep tracing 'end---------'? Any help would be appreciated. Thanks
in advance.

Works for me. But if it keeps tracing 'end--------' then it sounds like the
interval is not being cleared for some reason. Or perhaps you are setting the
interval in an onEnterFrame so it keeps being reset.

FYI, if you are publishing to Flash 8, you can just use setTimeout for these sort of uses:
http://www.flashguru.co.uk/flash-8-settimeout/

No, it is not in a frame loop. Here is an example of the structure of the AS in
the frame:

function update() {
trace('update---------');
clearInterval(_root.pause_update);

if(this_occurs) {
//do this
ready_lvl_up = setInterval(lvl_up, 1500, "para_1");
} else if(that_occures) {
//do that
ready_lvl_up = setInterval(lvl_up, 1500, "para_2");
} else {
_root.end = setInterval(function() {
clearInterval(_root.end);
gotoAndStop(20);
trace('end----------');
}, 1500);
}
}

function lvl_up(category) {
clearInterval(ready_lvl_up);

if(category == "this") {
//do this
} else if(caetgory == "that") {
//do that
}
}

_root.pause_update = setInterval(update, 1500);

stop();

Now tell me, do you see any frame loop?

To see a frame loop you'd have to inspect the FLA, since it's frame level, not
script level. However, you have a stop() in that script, so unless it's being
set to play() or gotoAndPlay() from some other code then there isn't likely a
frame loop.

But I can tell you that copy/pasting that code into a new doc and publishing
in SWF6 and AS1 or AS2 works, so it must be something somewhere else that is
causing the problem.