Excel to create drop down list

Less chance to use excel, i only use it when i am study in IVE.
I read the special excel, it could create a complicate drop down list. I am interest so i try to find the solution....
This is a good site to teach that simple method to create drop down list.
http://www.contextures.com/xlDataVal02.html

Oracle start with .... connect by

It is a very useful script. I never use it before it like a recursive loop to get all the result in single SQL query.

http://www.adp-gmbh.ch/ora/sql/connect_by.html

Ajax Mistakes

It just reference site to talk about the mistake of using Ajax:
http://alexbosworth.backpackit.com/pub/67688

HTML Form Submit Behavior

Long no see and write this blog!
I think i have much time to record my knowledge and testing.
That time i want to talk about the html form submit.
It make me feel confuse in IE( I test it on IE6).

Behavior 1 :
When form only have a single input text field, and user press enter button, it will directly submit the form.

Behavior 2:
When form not only have a single input text field, and user press enter button, it will acting click submit button to submit the form.

you can simple test this behavior, you only need to add a javascript on