#content_main
{
position:absolute;
top:80px;

width:99%;
height:430px;
z-index:10;
}

#top
{
position:absolute;
top:20px;
width:99%;
height:60px;
z-index:10;
font-size:11px;
}

#menu
{
position:absolute;
top:0px;
width:99%;
height:20px;
z-index:5;
}