Re: MySql db data - don't show map markers until query submitted - how?

Simon,

Check out http://www.farleyfamily.net/school/project/map

I believe its functionality is what you're looking for. The source
code is available for download from the home page.

In short, you'll want to add a form submit button, then wrap your PHP
block of code that adds markers inside an:

if ($_SERVER['REQUEST_METHOD'] == "POST")
{
..add markers
}

-Matt