.aerobuttonmenu{
overflow: hidden;
width: auto;
padding:0;
background:url(images/menu_bg.gif);
}

* html .aerobuttonmenu{ 
width: 100%;
}

.aerobuttonmenu a.aero{ 
display: block;
float: left;
font: bold 11px arial; 
line-height: 30px; 
height: 30px; 
text-decoration: none; 

}

.aerobuttonmenu a.aero:link, .aerobuttonmenu a.aero:visited, .aerobuttonmenu a:active{
color: black; 
color: #fff;
}


.aerobuttonmenu a.aero span{
background: transparent url('images/menu_right.gif') no-repeat top right;
color: #fff;
display: block;
padding:0 20px 0 20px; 
}

.aerobuttonmenu a.aero:hover{ 

background: transparent url('images/menu_left.gif') no-repeat 10px center;

}

.aerobuttonmenu a.aero:hover span{
color: #fff;
text-decoration:underline;
background: transparent url('images/menu_right.gif') no-repeat top right;
}