How can i make a button download a PDF?

I am using FlashEff 2.0

I would like a button i created to download a PDF. How would i go about doing this?

One way is to add this code:
flasheffInstance.addEventListener(MouseEvent.CLICK, clickHandler)
function clickHandler(ev:MouseEvent):void{
//the code for downloading the pdf

}
or this code if you use flasheff2code:
flasheffInstance.addEventListener(FLASHEFFEvents.MOUSE_DOWN, mouseDownHandler);

function mouseDownHandler(evtObj:FLASHEFFEvents):void
{
//the code for downloading the pdf

}