As Microsoft's IEblog points out, their Faster DHTML is 12 Steps isn't entirely new but does have some valuable information. Obviously some of the info is quite IE-specific, but it's still worth a read.

Here are the tips included in the article:

• Batch Your DHTML Changes
• Talk to Your innerText
• Use the DOM to Add Individual Elements
• Expand Your Options in a SELECT Element
• Use the DOM to Update Tables
• Write Once, Use Many Times
• Don't Be Too Dynamic with Your Properties
• Data Binding is Good for You
• Keep Your Expando Properties Off the Document
• Avoid switching classes and style rules
• Collapse a Text Range Before Finding the Parent
• Related Topics