I need to go around a site using java programmatically but the site doesn't change the url when linked is clicked.

Site: <http://cliqa.nana10.co.il/>

On the right you have a bar with some links, click them and you will see that while the content changes the url doesn't change. how can i achieve programmatically this mouse click on one of the links in Java, I thought about HTTP POST but what exactly I'm going to send? an example would be much appreciated.