Click for following for a demo (try clicking quickly and numerously too)

Add Success Note Add Information Note Add Fail Note

JavaScript Notification System by Joe

One negative side effect to consider, it can be frustrating to the user to see a message then have it disappear and move on them. Especially an error message. Might want to remove the fade out and offer an [x] close button for errors.

A better approach is to add the notes to a placeholder that will stay on the page like gmail alerts. However, I have encountered long scrolling pages where the user needs ajax feedback and this notificaiton system was ideal.

*jQuery required. View HTML source for all neccesary code.