Reading javascript variables with PHP

[jit.sd]

Hey ,
I am making a page which needs to load the appropriate values from a database depending on which option is selected by the user in a drop down menu . So the option selected by the user is stored in a javascript variable , now how to i pass this value onto a php variable which will eventually connect to the mySql database and get me what i want . I do not want to leave the page or reload the page . Is there a way of doing this without loading a new page or reloading the page ?

thanks ,
Jit

[Arndt]

Hey ,
I am making a page which needs to load the appropriate values from a database depending on which option is selected by the user in a drop down menu . So the option selected by the user is stored in a javascript variable , now how to i pass this value onto a php variable which will eventually connect to the mySql database and get me what i want . I do not want to leave the page or reload the page . Is there a way of doing this without loading a new page or reloading the page ?

thanks ,
Jit

I think what http://www.w3schools.com/ajax/default.asp has to say about AJAX can be helpful. And I can't say much more because I only experimented a little with this - I haven't done much Web programming.