How to start creating a Site Builder

Hi,

I want to create a site builder using javascript and HTML and AJAX. But I can't figure out where to start from or how to go about it ? Can anybody give me an idea on how and where to start ? Is there any articles or any specific javascript API for this purpose ?
Any help is greatly appreciated. Thanks in advance.

re: How to start creating a Site Builder

what should it basicly do - means: what are the requirements for the tool? there are a lot of such javascript WYSYWIG-editors out there that might be used for this job ... you might search the web for them and have a look at the source code ...

basicly they use an iframe with the attribute contenteditable = "true" as editor region and then applies some toolbars where you put your actions that should be applied to the editable content.

kind reegards