Capital Gains Tax and HELOC

[Nick Clayville]

I am looking to sell a rental property and have a mortgage and a HELOC (Home Equity Line of Credit) against it currently. If I were to sell is the profit (taxable amount) considered the sale price minus mortgage + HELOC (profit = sales price - (mortgage + HELOC)) or just the sale price minus mortgage (profit = sale price - mortgage)? In other words would I have to pay capital gains tax on the amount that I use to pay off the HELOC in addition to the amount above and beyond the mortgage? Also would I have to pay taxes on the depreciation I took against it?

Thank you for any advice you can offer.