Use Pan and Zoom in Photoshop Elements 10
When you zoom in on a document larger than the image window can accommodate, scroll bars provide a means for moving the image inside the window. Moving the image around a window is called panning the image.
You can also use the Hand tool to pan the image. Zoom in to an image and click the Hand tool. Click and drag the image around the window.
If you want to zoom in or out while the Hand tool is selected, hold down the Ctrl key (Command key on the Macintosh), and the Hand tool temporarily changes to the Zoom In tool. Hold down Ctrl+Alt (Command+Option on the Macintosh) to temporarily change the Hand tool to the Zoom Out tool.
The Navigator panel affords you several different options for both zooming and panning an image.
To open the Navigator panel, choose Window→Navigator. The Navigator panel opens as a floating panel in the Elements workspace.
While you select options for zooming in the Navigator panel, the image preview in the panel stays fixed to show you the entire image. When you zoom in and out inside the panel, the corresponding zoom is applied to the active document.
Either use the zoom tools on the panel or drag the slider left and right to zoom in and out. If you place the cursor inside the image preview thumbnail, you can drag a rectangle and zoom into the image.
Using the Navigator panel can be particularly helpful if you use two monitors. Just drag the Navigator panel to your second monitor, where you can change zoom levels without having the panel obscure the background image.