interactive forms

[bogdi01]

I have a problem at the beginning of making a website. I have a database in mysql and i want to make some interactive forms.
I want to make some input textareas controled by javascript i think (you suggest what should i use) that start searching in the database and listing the results like dropdown box by the time i start typing.
For example when i start typing in the textarea "New" the program start searching for the all the cities that start with "New" or containing "New" and listing the result in a dropdown box.
So the question i have are: what script language to use?, how is the best to get information from the database (when the page loads or when i type in the textarea). What documentation i can use for this issue.

[bogdi01]

I don't know if you understand my issue very well.
I think this textarea box where the user type is something like searchbox but with real-time results and with the option of selecting the results.
I have seen this king of form on one site a year ago but i can't access it now. In firefox 2.0 the searchbox looks like what i would want for my website.

[ray326]

Read up on AJAX.