javascript - Finding the methods/properties on a swf object -

i have swf object embedded web page. without having access source code of swf file, how can find methods/properties exposed?

for example...

alert(document.getelementbyid('swfobject').id); 

...returns pop-up of "swfobject". , this...

document.getelementbyid('swfobject').somemethod(); 

...executes somemethod.

thanks.