Hook "onchange" Event on Default Edit Form

Greetings,

I have a rather complex JavaScript I am writing and have it placed in a script block in the Default Edit Form of a task list.  I have everything working except for one last part.

I need to hook in to a drop down list onchange event.  I want to fire my on function any time the drop down list is changed.  The result is, I'm disabling/enabling a button based on the value of the drop down.  In any other circumstance, this would be simple; however, I cannot seem to get it work here.  This is my code:

var element = $("select[title='Network Access Action']")
if(element != null)
{
    element.setAttribute("onchange","networkAccessActionChange();");
}

Seems quite straight forward.  But the "networkAccessActionChange" function is never fired.

What am I doing wrong?

Thank you in advance for the help!

Bob