Although leaking memory is a common issue in every web browser, Internet Explorer is probably the best player in that game.
Here’s a link about some IE memory leaks and how to work around them.
Drip’s author also states that:
“Specifically, pages with hidden table cells will leak memory when they are unloaded. This leak is not caused by JavaScript code, and it can only be avoided by capturing the “onbeforeunload” event and displaying all hidden table cells. Because only a small amount of memory is leaked, it is possible that certain pages can ignore this leak with no severe consequences.”
Some other docs about memory leaks in Internet Explorer:
- Understanding and Solving Internet Explorer Leak Patterns
- Memory Leakage in Internet Explorer - revisited
- The Event Cache
Good luck.