Help with switching between display with push botton on LCD

Hi guys i,am new to coding and arduino and loving it so far, but i am stuck at the moment with this little problem. I have one LCD connected to my arduino and want to switch between two displays on it via a push button. if someone can possibly help me with some code it will be much appreciated. Thanks in advance

Don't crosspost http://forum.arduino.cc/index.php?topic=477266.msg3260445