AS3 button firing off multiple times on quick press only

programming flash
1

ok so, i wrote this code:

function btn4Loaded(e:Event):void { //-- START btn4Loaded
        if (e.target == load1 || e.target == load2) {
            myLoadedSwf.gotoAndPlay("outro");

            removeChild(myLoadedSwf);

            urlRequest = new URLRequest(e.target.name+".swf");
            loader.load(urlRequest);
            addChild(myLoadedSwf);
        }

} // end btn4Loaded.

and it works, once clicked, it does what it has to do. Ofcourse, me trying to break it, i found that if i click the buttons fast, it will re-import the external swfs causing me to have multiple instances of the external swf.

so in short, if i click like normal(slow ) ie like a person that clicked to view a section etc, then its fine, if i click fast or repeated clicking ie like a person that double clicks etc, then the problem occurs.

any ideas how to fix this?

thanks in advance.

edit*** heres a link to test file to show what i mean http://www.somdowprod.net/4testing/flash/tst