Need Help.. :(

Hi friends,

I using two pictures for this animation and both pictures loading from a location. What i need is every 10 seconds i have to change one picture to another picture. So first 10 seconds we can see the first picture and next 10 seconds the second one. This will happen every 10 seconds.

Every 10 seconds… this is my problem. I could not change the picture exactly in the 10 seconds.

I need a simple code for this… Please help me to complete this animation.