每个 div 包含两个图像。下面解释它是如何工作的......
-div1:ImagesA.1 fade out , ImageB.1 fadeIn.
-Time Interval of 2secs.
-div2: ImageA.2 fadeOut, ImageB.2 FadeIn.
-Time Interval of 2 secs.
-div3: ImageA.3 fadeOut, ImageB.3 FadeIn.
-Time interval of 2 secs.
-div4: ImageA.4 fadeout. ImageB.4 FadeIn.
again..
-div1:ImageA.1 fadeout and ....
cycle countinous forever.