Experiencing error on Airport pages

Suddently, each time I visit an airport page, I recieve en error. See the image below.

Here is my translation:

A script on this page might be occupied, or does no longer respond. You can stop the script now, or continue, and see if it stops by it self.

My browser (freezes) until this message comes up, and I tell the script to stop. I use Mozilla Firefox.

Any suggestions? I updated Java yesterday, to see if that would help.

It´s a problem with larger airports. It needs some time to generate the airport graphic and the browser thinks, that the script has a timeout

For me everything was ok until about 3 weeks ago even for the largest airports. Since then it keeps producing this.