sometimes after installing Android sdk and launching the emulator you find that the emulator is too large that some of it may be invisible.

to correct this do the following:
  1. from  eclipse go to Run->Run configurations.
  2. from the left pane choose your project name and from the right pane choose the target tab.
  3. you will see a list of available virtual devices. choose yours and you'll find below the Additional Emulator Options section.
  4. enter the following command  -scale 0.7, where 0.7 is the ratio between the emulator size and your screen size.
  5. run the project and the emularot size will be adjusted to your screen