JavaScript dialogs

I found an extremely useful JavaScript library called Prototype Window which is built on top of Prototype and Scriptaculous. I really like how easy it is to customize and add different skins to the dialogs. I am using this for the dialog that explains how I created the A2D logo. Creating a dialog is easy as this:

var dialog = new Window('modal_window', {className: 'dialog', top:logo_top, left:logo_left, width:logo_width, height:logo_height, zIndex:150, opacity:1, resizable: true});
dialog.setContent('logo_creation');
dialog.show(true);