body{
	background-attachment: scroll;
	background-image: url(retro.jpg);
	background-repeat: repeat;
	background-position: center top;
}
.txt_black {
	font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
	font-size: 11px;
	color: #000000;
}
.txt_white {
	font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
	font-size: 11px;
	color: #FFFFFF;
}
.list {
	font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
	font-size: 11px;
	color: #000000;
	background-color: #FFFFFF;
	line-height: 17px;


}
.sublayer {
	font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
	font-size: 11px;
	color: #6B787E;
	background-color: #283439;
	SCROLLBAR-FACE-COLOR: #13181A;
	SCROLLBAR-HIGHLIGHT-COLOR: #283439;
	SCROLLBAR-SHADOW-COLOR: #13181A;
	SCROLLBAR-3DLIGHT-COLOR: #13181A;
	SCROLLBAR-ARROW-COLOR: #ffffff;
	SCROLLBAR-DARKSHADOW-COLOR: #13181A;
	SCROLLBAR-BASE-COLOR: #000000;

}
.scroll {
	SCROLLBAR-FACE-COLOR: #13181A; SCROLLBAR-HIGHLIGHT-COLOR: #283439; SCROLLBAR-SHADOW-COLOR: #13181A; SCROLLBAR-3DLIGHT-COLOR: #13181A; SCROLLBAR-ARROW-COLOR: #ffffff; SCROLLBAR-DARKSHADOW-COLOR: #13181A; SCROLLBAR-BASE-COLOR: #000000;

}a:link {
	font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
	font-size: 11px;
	color: #3399FF;
}
a:hover {
	font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
	font-size: 11px;
	color: #666666;
}
a:visited {
	font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
	font-size: 11px;
	color: #3399FF;
}
a:active {
	font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
	font-size: 11px;
	color: #3399FF;
}
table

{ 

margin-left: auto;

margin-right: auto;

}

 <table class="center">

    ...

  </table>

   body {text-align:center;}
.txt_Header {
	font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
	font-size: 22px;
	color: #000000;
}