Problem acessing arrays

1

Look at this code:


this["ar"] = new Array();
this.ar[0] = "ar zirou";

var er:Array = new Array();
er[0] = "er likes zirou too";


for (var xc:* in this){
    trace (xc);
}//ar

for each(var xx:* in this){
    trace (xx);
}//ar zirou

I want to loop in both arrays, how can i do that?
Suposing i cant know how many arrays it will have inside,cos they will be added dynamically
When As3 was starting to look easy…new problems arrive…wich makes me not sure if the transition worth…
Thanks