jQuery Tree plugin

Very often in web development UI you need a tree component. Some time ago I've written about jsTree and lazy loading. Now I've found the promising alternative called zTree. It is a jQuery plugin that supports JSON, AJAX, checkbox and other things you can imagine. Also it has good documentation and examples. Moreover it is easy to use. 

jQueryUI position utility

In web-development you often need to work with html, css, javascript.
The most tedious part of this work is to position elements among each other.

What can help you to speed up this work?

I have discovered the position method in jQueryUI library.
This method easily allows you to position given element against selector, element, jquery or event. The last option means that you can also position elements against your cursor.

Hope this help someone.