PSE9 - Resize Edit Window & Project Bin

I inadvertently clicked something while editing a photo and the project bin changed size drastically.  I was able to resize the project bin by dragging a corner and I was able to re-position the project bin by dragging it back to the bottom of the screen, still fully visible.  However, something also changed with the sizing of the edit window.  The project bin now covers the lower portion of the edit window where before the edit window ended just above the project bin.  The net result is the lower slider in the edit window is now covered by the project bin.  When I zoom on an image in the edit window and need to use the sliders at the bottom and right side of the edit window to navigate around the image, I can't use the bottom  slider because I can't see it.  I'm sure there's a simple solution but I don't know what it is.  Any suggestions appreciated.