Browsing Spanish translation

Translators: A live region is an area of a web page that is periodically
updated, e.g. stock ticker. http://www.w3.org/TR/wai-aria/terms#def_liveregion
The "politeness" level is an indication of when the user wishes to be notified
about a change to live region content. Examples include: never ("off"), when
idle ("polite"), and when there is a change ("assertive"). Orca has several
features to facilitate accessing live regions. This message is presented to
inform the user that Orca's live region's "politeness" level has changed for
the current live region.