The first form has fields that are members of the class visibleIf-doNotReset and the second doesn't. To see how this changes the behaviour, go to the first form, choose "IE6" as the answer to first question, "No" to the second question that pops up, and "No" to the third question that pops up. Then change the the answer to the first question from "IE6" to anything else. When all the other answers disappear, change it back to "IE6". You'll notice that the answers to the other questions stay the same. If you do all the same steps in the second form, the answers to the second and third questions disappear. Back to User Agent Man visibleIf article