Running out of quotes

I have the quote widget installed and working properly, I have it set to auto-refresh the quotes, but it seems that if I leave the page open, after it randomly displays all my quotes in the database, I haven’t sat to count if it is actually displaying them all, but I assume so, but in any case after leaving the page open for a while it just stops displaying quotes and is just blank. Can you direct me to the code area where I can add a loop so that it starts over instead of stopping after it has run through all the quotes in the DB. Thanks a lot.