Use the Property inspector or the Layer inspector to change the stacking order of layers.

In HTML code, the Z Index determines the order in which layers are drawn in a browser. You can change the Z Index for each layer separately using the Property inspector, but the following procedure is much simpler.

To change the stacking order of layers:

1	Choose Window > Layers to open the Layer inspector.
2	Select a layer in the Layer inspector and drag it up or down.
3	Release the mouse button when a highlighted area appears between the layers.
	Don't release the mouse button when a box appears around the name of the target layer. Doing so places the layer you're dragging inside the target layer, creating a nested layer.
	The layer at the top of the list is at the top of the stacking order.