ok i want a nice little transparent box but when i add the code the whole page goes black in IE..

whats wrong with this code?

Code:
<table width="800" height="600" border="0" background="Tbackground.jpg" style="filter: alpha (opacity=75) ; -moz-opacity:.75;">
<tr>
<td valign=top>

<p align=justify>type in here cybernins..haha sike</p>

</td>
</tr>
</table>