» Slice tool
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The Slice Tool cuts images to pieces for Web publications:
In the Toolbox, select the Slice
Drag a rectangle holding down the mouse button.
If necessary, move and resize the currently active slice. To move a slice by just a few pixels, use the keyboard cursor
To create a slice with the pre-defined proportions choose the Fixed Aspect Ratio style and set Width and Height values.
To create a slice with pre-defined size choose Fixed Size style and fill the Width and Height input fields.
To add a slice just drag another rectangle.
Right-click on a slice to open the tool's context menu. Through this menu you can access the commands available in Photoshop.
tool is available in Photoshop Elements as well. You just need
a tiny workaround