Quickly Zoom In and Out of Any Windows 7 Application
To quickly zoom in to any part of your screen, hit the Windows key and +. By default, the Magnifier will zoom in 100% increments, but you can change this in the tool settings. Hold down the Windows and – keys at the same time to zoom back out.

Other quick keyboard shortcuts, once you have the Magnifier tool up, include:

CTRL + ALT + L to bring up the lens display view
CTRL + ALT + D to dock the magnification area.
CTRL + ALT + F brings you back to the full screen mode.
In some applications, such as your web browser and Photoshop, you can use CTRL + and CTRL – instead to zoom in. But if you ever want to get a closer look at something in Windows 7 and the CTRL + shortcut doesn’t do anything for you, try using the Windows key instead of the CTRL key.

How to disable directory listing for website folder

Add or modify .htaccess file with following content.

Options -Indexes