I have got a html form to input books' information. When I run my PHP script in localhost, everthing is good. The problem is when I upload it to my shared hosting, the hosting provider tells me that my script consumes a lot of server's resources.
My friend told me that I should use Ajax to pre-load dropbox(es). I don't know how to do that.
I want to "Choose a language" (1) it will have an influence on "Choose an author" (2) and "Choose a publisher" (3). That means "When I choose French, American authors and publishers will not to be listed".
I am using an "onchange" event in HTML to refresh / reload. It makes a slow flicker, a long delayed time, a lot of hosting resource,...
Some queries with Google and Altavista I cannot solve the problem. Will everybody here tell me what Ajax tool(s) I should use?