Layers issue!

Hi there,

I wonder if someone can help me out please. Ok so I have a slide with 4 layers, the user clicks through to each layer with arrow buttons within the layers. So on one of the layers (layer 2) I have a link that opens a pop up (another layer - layer 5) with a close button. At the moment when the user closes the pop up (I have a trigger to hide the layer) it returns to the base layer but I actually want it to return to layer 2 when the pop up layer is closed.

I hope this makes sense!! 

Any help on this would be great :-)

L