Our website provided a free download of jsTool 1.0 for Mac. JsTool for Mac is included in Developer Tools.
From the developer:
jsTool brings the concept of drag & drop to the JavaScript world. It provides you a list of objects and a clear hierarchy based on the elements of the document object model that works across browsers. Grab an object in that list and drop it on your code and the JavaScript reference to that object is created. It's great for beginners because they can learn how JavaScript and the DOM work through simple drag & drop experimentation.
You may want to check out more Mac applications, such as The Colors Of The Rainbow, which might be related to jsTool.