Mortgage help please?

Hi, We purchased a house during the peak in 2006. We paid 319,000 for the home when my spouse and I had large incomes. We put 20% down.... Now my husband got transferred to a city several hours away so we have to move and I don't have a job. To avoid two mortgages, we are renting in the city my husband was relocated to. Our house is now appraised at 279,000. We owe 237,000 on our mortgage. We live in FL where homes are competing with foreclosure and short sales. Any advice would be appreciated! Thank you so much!!