I found some problem that, when I put mp4, ogv, webm, flv in the module, and mp4 is the first one in order. It works everywhere but not firefox, opera and android 2.2. So I have to create one which is flv in order no.1 for firefox and opear, and create an

A do..while loop is almost the same as a while loop except that the loop body is guaranteed to execute at least once. A while loop says "Loop while the condition is true, and execute this block of code", a do..while loop says "Execute this

When i is 1, the test expression i <= 5 is true. Hence, the body of the while loop is executed. This prints 1 on the screen and the value of i is increased to 2. Now, i is 2, the test expression i <= 5 is again true. The body of the while loop is ex