Fueling Fires

Today I was working with some nexted Sortable lists using the Sortable class from Scriptaculous.  My list looked something like this.

For some reason the onUpdate event did not seem to fire. I found a post here mentioning that not only do the list items have to each have unique ID's, which mine clearly do, but they must also following a naming scheme something like [name]_[id] which mine seems to follow as well. Upon further investigation, it turns out that it needs be formatted with an [name]_[integer]. I assume this is required in order for the class to offer the sequence method.

Until today, I always cleared options from a select by doing something like this:

A quick Google search turned up this blog post where they had this helpful snippet:

This clears all items in the select and there is no noticeable performance loss when dealing with a select with a reasonable number of options.