Nice lesson on dialogs and web applications …
This is a nice tutorial in how to create dialog boxes in javascript. I found it very useful and am going to play a little bit with my site!

Modal and Modeless Dialog Boxes. How do you like your dialog boxes: modal, or modeless? Learn the difference between the two, how to pop up both flavors in later Internet Explorer versions, and what you can and can’t do with them in this IE dialog box primer. By Yehuda Shiran and Tomer Shiran. 0815 [WebReference News]