Hello Guys, I have been grabbing good ideas and code from everywhere to build an online order form. I have no skill programming, but i have managed to almost finish it. However i still have two thing I cant done. Hope you can help me.
1. If any product of the "Product #2 drop-down menu" is selected, then "shipping drop-down menu" should only have "Post office option" enabled.

2. If "Shipping drop-down menu" is 7-11 or Family Mart, then "Convenience store text box" should be enabled.

You can check the whole code here: http://dl.dropbox.com/u/21610873/code.txt

Thanks