BlockSchemes in JavaScript

I need visualizer of algorythmes created in JavaScript. Like BlockSchemes, mostly with If and Statement blocks. That could be moved, resized, connected with arrows. Anybody saw such open source projects?

From stackoverflow

• If you are referring to drawing with JavaScript the only two things I can think of are the HTML Canvas Tag which is HTML 5 OR having an Image Handler and using CSS positioning which is not drawing with JavaScript but simply positioning to give a drawing affect through the use of AJAX

  dynback.com : Its not drawing, its positioning of general tags, but I was thinking, something like this already exist, maybe in Flash?

  REA_ANDREW : Sorry I am not getting what it is exactly you require from your question. Can you explain more?

  dynback.com : There is gmail - outlook in web, I want Visio in Web.

  REA_ANDREW : Similar to something like this you mean> http://www.gliffy.com/

  dynback.com : Thanks, but its commercial and priority to JavaScript solutions, not Flash

• I am using Org Chart from Google Visualisation API - it is a JavaScript library, that can draw tree-like graph. It can be used for lot of data, i am using it a lot for if-statement tree like structures.

  Unfortunately, the result is static, cannot be moved or resized.