the gap problem between two H1B visa

Sorry I can't type in chinese.

My current H1B ends on July 31 and new H1B starts on August 7. work for a university. there is a 7 day gap problem.

Question: Do i have to go back to China during the 7 days gap? I know that for other visas, as long as i submitted the application of the new visa, I will be legal in the States. does this apply to H1B?

If I go back to Canada to apply for a H1B visa, can I come back right after I get the visa, or do i have to wait unitl August 7 to come back?

Thanks a lot!

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• Check if I-94 is with your approval notice - 回复：the gap problem -pjiang- ♀ (174 bytes) () 05/21/2010 postreply 08:58:23