http://code.google.com/p/syntaxhighlighter/
/* Main style for the table */
.dp-highlighter
{
font-family: "Courier New", Courier, mono;
font-size: 12px;
text-align: left;
border: 1px solid #2B91AF;
background-color: #fff;
width: 99%;
overflow: auto;
line-height: 100% !important;
margin: 18px 0px 18px 0px;
}
.dp-highlighter ol
{
margin: 0px 0px 0px 45px;
padding: 0px;
color: #2B91AF;
}
.dp-highlighter ol li
{
border-left: 3px solid #6CE26C;
border-bottom: 1px solid #eee;
background-color: #fff;
padding-left: 10px;
}
.dp-highlighter ol li.alt
{
background-color: #f8f8f8;
}