/*** DefaultButton (replaces old version, this one uses hover effects) ***/
.ui-dbtn {
	margin: 2px;
}
.ui-dbtn:HOVER, .ui-dbtn:FOCUS {
	background-position: 0px -<%= defaultbutton_height %>px;
}

/*** DefaultButton (replaces old version, this one uses hover effects) ***/
.ui-dbtn {
	margin: 2px;
	background-color: transparent;
}
.ui-dbtn:HOVER, .ui-dbtn:FOCUS {
	background-position: 0px -<%= defaultbutton_height %>px;
}

Make sure the background color of a button is transparent; it is grey in FFox.
Make sure the background color of a button is transparent; it is grey in FFox.