<STYLE>
#mypage {
width: 900px;
}
#myheader {
position: relative;
height: 150px;
width: 900px;
background-color: white;
}
#myleftnav {
position: relative; 
margin-top: 0px; 
margin-left: 0px;
float: left;
width: 150px;
height: 100%;
padding-left: 2px;
display: block;
}
#myrightnav {
position: relative; 
margin-top: 0px; 
float: right;
width: 150px;
display: block;
}
#maincontentholder {
background-color: white;
width: 900px;
display: block;
}
#mybodymain {
position: relative;
margin-top: 0px;
width: 580px;
float: left;
padding-left: 5px;
}
#mainbody {
}
#mybody {
}
#mymainfooter {
background-color: white;
position: relative;
width: 900px;
}
#mytopfooter {
background-color: white;
position: relative;
width: 580px;
}
#pagefooter {
background-color: white;
position: relative; 
width: 900px;
}
</STYLE>

