replace:

.OptionWindow a:hover {
   text-decoration:none;
   background:#1D2E55;
}

with:

.OptionWindow a:hover {
   text-decoration:none;
   background:#1D2E55;
}
.OptionWindow strong, .OptionWindow b, .OptionWindow, .OptionWindow [style*="font-weight"] {font-weight:normal;}