In Cascade 7, you are presented with two ways to find and select an asset (page, image, doc, etc.).
1. If you click the orange square, blue rectangle or [ Search ], the new search box will appear. Enter part or all of the asset's System Name. When the file list appears, click on the correct file to select it.
2. If you click the new Browse button (), the familiar pop-up dialog will open that allows you to navigate to the asset in the folder tree.
If you don't like the new search feature, you may disable it in your User Preferences. Click the My Settings link (to the left of the Log Out link at top right), check the box next to "Disable the Type-Ahead Chooser" and submit.