checking select boxes values

[amrigo]

Hi

I have a form with two select boxes one display cityes from my state, (retrieved from database) the second display the streets from the previous selected city .

How can i check if a city was choosed to make the properly query in the streets for that selected city without having to submit the form?

Javascript can pass values to php variables? how?

[zhabala]

Without submitting a form it can be done only with JavaScript, but you will need to read all cities and all streets from DB at the beginning and then you can manage your selects with JavaScript.
Don't know how many are them, but it will eat a memory.

Zdenek

[amrigo]

My idea was read all the cities and tie the streets reading only with an javascript/php variable enabled on the onChange javascript method

Do you have any sample code that ties the second select to the first select?

Cheers