#69 delete_instance is buggy in Firefox

[Anonymous]

Ironically, I've found a bug that works fine in IE but is broken in Firefox. I can create an EditArea and call delete_instance() with the same id in IE but only one time in Firefox. The iframe gets created a second time but the editor never loads leaving me with a visible textarea placeholder. However, using show() and hide() repeatedly seems to work just fine under both browsers. If it helps, I'm using the multi-file editing mode. I don't have a simple example handy to demonstrate the problem.