Passing a funciton name as a variable?

Been looking everywhere to find out if there is a way to do this:

btn.onRelease=function(){
[INDENT]nowDoDis(“hello”,fireThis())
[COLOR=Silver]//tried to use nowDoDis(“hello”,“fireThis()”)[/COLOR][/INDENT] }

function nowDoDis(param1:String, param2:function??){

*//want to fire param2

param2
//or
this[param2]

////???///////
*
}

function fireThis(){
*//some actionScript code
trace(“i hope this works”)

}

Anyone know Of a way to accomplish this without having to use an if/then statement

Arigato.