Remove Water Marks from Wood?

[peter01]

There are two main types of marks caused by water on wood: white or cloudy marks and dark stains. White marks are made when water gets into the finish on the wood and cracks or clouds it. Darker marks and stains often occur where the water has seeped past the finish and gotten into the wood itself. Both types of marks can be caused by a beverage glass or a hot, damp item — like a pizza box or a casserole dish — placed on a table.