Help with functions please

hello
im new to actionscript and im still trying to work out the basics
i have functions like this
private function sinus( phase: Number ): Number
return Math.sin( phase * Math.PI );
private function sawtooth( phase: Number ): Number
return ( phase - int( phase ) ) - 1;
inside another function it uses sinus like this
amplitude = sinus(_phase)
say i have 2 radio buttons called saw_btn and sin_btn
how could i chose between sinus and sawtooth at runtime?
somebody mentioned i could use a Function object reference
what is this?
how would i write that?
thanks in advance for your help

what kg means here is that you can 'target' a method by name using a string and the access operator.  if you are doing so from within the Class Note, then you can use: amplitude = this[theStringGoesHere](_phase);
the string will be 'set' by your Radio button instances, then by changing the string (eg. clicking a radio button) the next time the method is called, it will fire the one that relates to the string 'by name' (the exact name of the method, case sensitive)  - the keyword 'this' is referring to the scope of the Class you are in, (eg. Note)
you could do this directly like so: amplitude = this['sinus'](_phase);
but the purpose of using a variable within the accessor, is to allow you the ability to change it at will and effect the next operation of the method, and/or the value of 'amplitude'
- hope that helps shed some light on things

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    Hi David,
    Thank you for your reply and patience, we are getting closer in spite of me!
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    Date: Wed, 11 Nov 2009 06:56:24 -0700
    From: [email protected]
    To: [email protected]
    Subject: Help with message please:  Warning: mysql_free_result() expects parameter 1 to be resource, null given in...... line
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    Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

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