Plugin or inspiration for toggle javascript

Hello.

I’m looking for a plugin or if someone in here has any experience with implementing the effect when you scroll down the page the headline and the info text changes. I have looked in the source and it doesn’t look like they are using a CMS system but I want to implement this in wordpress so the title refers to the title in the backend and the content to the content and text to the either a custom field or content text.

http://www.designbolaget.dk/

I hope you understand my question and can help me..

Thanks!