Hi, first visit this site http://www.devpro.it/bytefx/, then go for example to the download page and you will see that the page is not loading a new page but is loading the new content in the same page(this can only be done with ajax) . In fact, the pages introduction, examples, f.a.q., api, download are all in a single page, namely index.html( you can see it in the source code of the page). My question is how to make this effect with a framework like mootools or script.aculo.us or another one? Second question is how to made the effect that when you go on page api for example and you click on something, the height(size) of the webpage is growing? Thank you in advance