Create a widget iframe rotate every 120 seconde

Hello! I want to know how to make a rotator widget minuite iframe code
I <iframe> 4 iframe code A, B, C and D Every one 250x250.

iframe A:
<iframe name="" src="http://www.ikomor.com" scrolling="yes" height="250" width="250" FRAMEBORDER="yes"></iframe>
iframe B:
<iframe name="" src="http://www.mondoha.com" scrolling="yes" height="250" width="250" FRAMEBORDER="yes"></iframe>
iframe C
<iframe name="" src="http://www.beramu.com" scrolling="yes" height="250" width="250" FRAMEBORDER="yes"></iframe>

iframeD
<iframe name="" src="https://www.twitter.com/mondoha13" scrolling="yes" height="250" width="250" FRAMEBORDER="yes"></iframe>
  I would like to create a widget 250x 250 for my wordpress theme to display iframe making rotations every 120 seconds.

the wiget displays iframeA after 120 seconds then displays iframeB iframe iframe C and D and then back on after ca A iframe so on.
Thank you very much.