Man, I sure had trouble giving a proper name to this post.
// Convert string to a function reference
var strFun = "myFunctionName";
var func = eval(strFun);
if (typeof func == 'function') {
// call it
func(param1, param2);
}
The string "strFun" is converted to a function "func". If func() checks out to be a valid function using typeof to check if the function exists, then we just call it with the arguments it needs.