Tables, CSS, Netscape, Background-color

[Klae]

I seem to not be able to successfully set the background-color of a table using style sheets.

1. this is my stylesheet
.xcelmenutable
{
position: absolute;
left: 0px;
top: 0px;
visibility: hidden;
background-color: #6A9919;
width: 108px;
height: 72px;
z-index: -1;
}
2. I also have a style for the cells...
.menuTDclass
{
position: relative;
font-family: Verdana;
font-size: 8pt;
width: 108px;
height: 25%;
text-align: center;
vertical-align: middle;
}
3. I position the table and "show" it after a click event but only the background-color doesn't work. It does work in IE4+.. not in Netscape4.0x or Netscape4.x.