#teaching ul { list-style-type: none; }
<body link="#C0C0C0" vlink="#808080" alink="#FF0000"> 
#teaching a { display: block; }
<style type="text/css">
.mainNav a:link    {
  /* Applies to unvisited links in class mainNav */
  text-decoration:  none;
  font-weight:      bold;
  background-color: #ddd;
  color:            blue;
  } 
.mainNav a:visited {
  /* Applies to visited links in class mainNav */
  text-decoration:  none;
  font-weight:      bold;
  background-color: #ddd;
  color:            #f0f;
  } 
.mainNav a:hover   {
  /* Applies to links under the pointer in class mainNav */
  text-decoration:  underline;
  font-weight:      bold;
  background-color: blue;
  color:            #fff;
  } 
.mainNav a:active  {
  /* Applies to activated links in class mainNav */
  text-decoration:  underline;
  font-weight:      bold;
  background-color: black;
  color: white;
  } 
</style>
body,td,th {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
	color: #000000;
}
body {
	background-color: #ECECEC;
	background-image: url(images/taling.jpg);
	background-repeat:repeat-x;
	margin-left: 0px;
	margin-top: 0px;
	margin-right: 0px;
	margin-bottom: 0px;
	padding:0px;
}
a:link {
	color: #000000;
}
a:visited {
	color: #000000;
}
a:hover {
	color: #000000;
}
a:active {
	color: #000000;
}
.hcenter{
background-image:url(images/b8.jpg);background-repeat:no-repeat;
}
.style2 {
	font-size: 24px;
	font-style: italic;
}
.style3 {
	font-size: 14px;
	font-weight: bold;
}
.bodytal{
background-image:url(images/bodytal.jpg);background-repeat:repeat-y;
}
.style4 {font-size: 13px}
.style5 {
	font-size: 16px;
	font-weight: bold;
}
.style9 {font-size: 30px}