Help with AS3:unloading external swf files with mouse click

I have external swf files which open in main swf with button click. I want the swf to close on mouse click but having problem with the actionscript. Any ideas about how to do this? here's the code so far:

var img1Request:URLRequest = new URLRequest ("kelly.swf");
var img1Loader:Loader = new Loader();
kelly_mc.addEventListener(MouseEvent.CLICK, clickF);

function clickF(event:MouseEvent):void{
img1Loader.load(img1Request);
img1Loader.contentLoaderInfo.addEventListener(Even t.COMPLETE,loadNowF);
function loadNowF(event:Event):void{
container_mc.addChild(img1Loader);
}
}

put this as the event handler for whatever element you want to click to close the loaded swf

PHP Code:

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function killSWF(event:Event):void{
try{
img1Loader.close();
} catch(e) { };
img1Loader.unload();
}; 


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