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Display (syntax) trees in webpage

I want to be able to display dynamic syntax trees on a webpage, possibly with a jQuery component. To show you what I mean, this
is a syntax tree, and this is the general way I want it to be displayed.
How do I build something like this with HTML and CSS?
edit: Solution
Just in case somebody who finds this question later is trying the same, here's what I did:
I ended up drawing the tree with Graphviz as an SVG, and then, moving the svg tree inside the DOM using some magic. That way I could still interact with the elements, e.g. drag&drop or hover/click events.
The result can be seen here.

Try d3, it has a really good tree visualization

Another option is ArborJs, you can find an introduction here

Creating a complex interactive wheel as a web app

How would you do to create a chart like this, interactive (i.e. with links and tooltips), in an HTML page?
From what I know about SVG I think it's the right direction to take (no Flash anyway), but I'd like to know what would be the path you'd take first in order to have an interactive chart looking like this on a web page.
I'm not asking for the details but just where to begin to look. I know JavaScript quite well, but I have never dealt with any SVG libraries.

checkout d3.js examples, this example looks very close to your pic.

I offer to use Raphael library (http://raphaeljs.com/) and if you like to make more complex or using 3d objects you can use webgl with treejs library (http://threejs.org/) .. you can find example and demo for charts or other documents in websites..

Complex heirarchical tree layout

I need to create an hierarchical tree (something like this), but i need some features:
Ability to design the nodes as i like (size, background image, fonts etc.)
Automatic layout
Ability to connect nodes by drag N' drop
I've looked at GoJs and its great, but it's canvas based, and i couldn't find a way to make the nodes look exactly as I want (actually not even remotely close).
I've also looked at d3.js which is also great but again, since it's SVG it's haard to design the nodes.
The main hustle here is the layout, and connecting the nodes, i can handle the Drag N' Drop my self, Is there a library out there that can handle the layout for me , so i can create the required div's, design them as i see fit and let the library do just the layout stuff?

Here are some sample libraries.
If you want to avoid canvas, try implementing drag n drop for the following
CSS3 Family Tree
SlickMap
or else see some canvas based libraries
JavaScript InfoVis Toolkit's HyperTree / SpaceTree
jsPlumb

Whilst a late answer, hopefully it can help others in the future.
Here is a drag and drop tree utilising the excellent D3.js library.
http://bl.ocks.org/robschmuecker/7880033
https://gist.github.com/robschmuecker/7880033
The tree in the example handles automatic layout/sizing, zooming, panning, drag and drop and is collapsible. All or none of the aspects can be removed if needed.

Javascript Library to dynamically create graphs?

Here is my requirement:
I need to create a visualization of links between different representations of a person. The image below I think indicates that fairly clearly.
Additionally, those rectangles would also contain some data about that representation of a person (such as demographics and the place). I also need to be able to handle events when clicking on the boxes or the links between them, as a sort of management tool (so, for example, double clicking a link to delete it, or something along those lines). Just as importantly, since the number of people and links will varies, I need it to be displayed by spacing out the people in a roughly equidistant fashion like the image shows.
What would be a javascript library that could accomplish this? I have done some research and have yet not found something that can cleanly do this but I'm hardly an expert in those libraries.
Here are the ones I've looked at:
Arbor js: Can dynamically create the spacing and links of the graph but I'm responsible for rendering all the visuals and there's really no hooks for things like clicking the links.
jsPlumb: Easily create connections between elements and draws them nicely enough but doesn't seem to address any layout issues. Since I don't know how many people will be on the screen, I have to be able to space them out equidistant and that doesn't seem to be a concern of jsPlumb.
D3.js: This creates a good visualization with the spacing I need but I don't see how I can show the data inside each node or do things like like mouse events on the links or box.
I'm feeling a bit lost so I'm hoping someone could point me to something that could help me or maybe point me to an example from one of these libraries that shows me that what I want is possible.

I ended up using Arbor with Raphael as my rendering library and it's worked out very well.

Take a look at Dracula Graph Library. It's a simple library that seems to do both layout as well as rendering graphs (using Raphael under the hood). It's a bit underdeveloped however.

BackboneJS and JQuery plugins architecture playing together in a MiniPhotoshop project

I'm rather new with BackboneJS.
it is exciting stuff for somebody who worked with plain JSONs until now. :)
I am used to design JQuery Widgets and plugins to encapsulate logic / presentation.
Backbone seems much more flexible with its MV* approach.
I am redesigning a "mini-photoshop" project for work. a javascript/html page which you can add elements like labels, images, buttons, change their properties, drag&drop them around and change their z-index, etc.
I took an approach of having a Backbone collection of elements that represents the drawing.
I thought of using a jquery plugin to be able to create this workspace in everypage i'd like.
so i could do something like:
$('.wrapper').miniPhotoshop({
elements:elements, // BB collection
painter:painter // an object that knows how to draw
});
the painter is seperated from plugin so i could easily change the way the collection is drawn.
So the objects here are:
miniPhotoshop - a jquery plugin that gets a BB collection
painter - an object consisting of methods that know how to draw the elements.
propertyBox - a jquery widget that when an element is clicked on shows its properties.
My question is does this jquery-backbone salad make any sence?
Apologies if this is an open-ended question, just hoping someone tried something similar before and be able to point me in the right direction.
Thanks!

I don't about others, but I wouldn't take jQuery for the structure of your app. I think Backbone is really good for structuring code, and jQuery is great for playing around with the dom.
My approach would be to use Backbone views to control the flow of your App and jQuery to play with/manipulate the dom inside Backbone views.