HTML - To Put Ads On Center [html]

<DIV ID="MainMenu">
	<div id="MenuMain">
		<!--Main Buttons -->
		<div id="menu">
			<a href="general/psmenu.htm" onmouseout="MM_menuStartTimeout(1000);" onmouseover="MM_menuShowMenu('MenuContainer_0', 'Menu_0',0,28,'ParentsStudents');"><img src="images/schoolmenu.png" alt="Festus School" border="0" /></a><a href="general/employeemenu.htm" onmouseout="MM_menuStartTimeout(1000);" onmouseover="MM_menuShowMenu('MenuContainer_1', 'Menu_1',0,28,'Employees');"><img src="images/aboutmenu.png" alt="About FHS" border="0" /></a><a href="schools/index.htm" onmouseout="MM_menuStartTimeout(1000);" onmouseover="MM_menuShowMenu('MenuContainer_2', 'Menu_2',0,28,'Schools');"><img src="images/psmenu.png" alt="Parents &amp; Students" border="0" /></a><a href="depts/index.htm" onmouseout="MM_menuStartTimeout(1000);" onmouseover="MM_menuShowMenu('MenuContainer_3', 'Menu_3',0,28,'Departments');"><img src="images/facultymenu.png" alt="Faculty" border="0" /></a><a href="publications/index.htm" onmouseout="MM_menuStartTimeout(1000);" onmouseover="MM_menuShowMenu('MenuContainer_4', 'Menu_4',0,28,'Publications');"><img src="images/curricularmenu.png" alt="Extra-Curricular" border="0" /></a><a href="board/index.htm" onmouseout="MM_menuStartTimeout(1000);" onmouseover="MM_menuShowMenu('MenuContainer_5', 'Menu_5',0,28,'Board');"><img src="images/newsmenu.png" alt="News" border="0" /></a>
		</div>

#MenuMain {
	/* The master div to make sure that our popup menus get aligned correctly.  Be careful when playing with this one. */
	position:relative;
	margin:0px;
	text-align:left;
	width: 100%;
}

#MenuContainer_0 {
	/* This ID is related to the master menu div for menu MenuContainer_0 and contains the important positioning information for the menu as a whole */
	position:absolute;
	left:500px;
	top:45px;
	z-index:300;
	visibility: visible;
}

#Menu_0 {
/* This class defines things about menu Menu_0's div. */
	position:absolute;
	left:0px;
	top:0px;
	visibility:hidden;
	background-color:#FFCC33;
	border:1px solid #FFCC33;
	width:158px;
	height:111px;
}

BODY		{
			BACKGROUND:#FFCC33;
			COLOR:#000000;
			FONT-FAMILY:SANS-SERIF
			FONT-STYLE:Arial;
			FONT-SIZE:12;
			}

A:LINK		{
			COLOR:#EB3914;
			text-decoration:NONE;
			}

A:VISITED	{
			COLOR:#EB3914;
			text-decoration:ITALICIZED;
			}

A:HOVER		{
			COLOR:#000000;
			text-decoration:underlined;
			}

A:ACTIVE	{
			COLOR:#000000;
			}

.BORDER		{
			BORDER:1PX SOLID BLACK;
			BACKGROUND:#FFBB33;
			COLOR:#000000;
			}

.YELLOW		{
			BACKGROUND:#FFCC33;
			}
	
.MainMenu {
	margin:auto;
	width:800px;
	}