| Technique | Example | Explanation |
| Simple image replacement | |
In Navigator 4.0 you will see the button flash red, green, blue and grey. In MSIE 4.0 the button will not change. |
| Threaded image replacement | |
In both Navigator 4.0 and MSIE 4.0 you will see quick flashes or no flash depending upon the speed of your computer. |
| Queued, threaded image replacement | |
In both Navigator 4.0 and MSIE 4.0 the button will flash red, green, blue and grey. |