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Chapter 8. Creating Interactivity with B... > Understanding Dreamweaver Layers

Understanding Dreamweaver Layers

In Chapter 5, you were introduced to Dreamweaver layers, the containers that you’ll use to hold much of the content in the learning application’s pages. Layers possess attributes that make them useful in creating user interactions. The three main layer attributes for learning interactions are as follows:

  • Absolute positioning— You can manipulate a layer’s L (left) and T (top) attributes to change its position on the screen.

  • Visibility— Layers can be visible or hidden from view. When layers are hidden, they still exist on the page but the viewer cannot see them. You can switch a layer’s visibility from hidden to visible so that the viewer can then see the layer content.

  • Z-index— The layer’s z-index indicates its position in the stacking order. Because layers can be stacked on top of one another, the z-index attribute specifies which layer is on top of another layer. The higher the number, the more on top the layer is.


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