Get and Post wont work ?

[eluser]WanWizard[/eluser]
Depending on the browser it might work, but is not according to the standards.

When I submit your form, firebug tells me that it tries to load http://taxidea.nl/zoek/index?provincie=6...reenplaats, so it does create the correct request, with parameters.

The reason why this doesn't work, is that the URL is missing an extension, identifying the request as a file. Now you're requesting a directory with parameters. You can test that by using http://taxidea.nl/zoek/index.html?provin...reenplaats, which responds with "U zocht naar :zomaareenplaats".