a.aero
{
    /*aero button CSS*/
    background: transparent url('/images/blue_left_23.png') no-repeat top left;
    display: block;
    float: left;
    font: bold 11px Verdana, Trebuchet MS; /* Change 13px as desired */
    line-height: 15px; /* This value + 8px should equal height of button background (default is 31px) */
    height: 23px; /* Height of button background height */
    padding-left: 10px; /* Width of left menu image */
    text-decoration: none;
    margin-right: 5px; /*spacing between buttons*/
    filter: alpha(opacity=80); /*this and next two rules control opacity of buttons before hover*/
    opacity: 0.8;
    -moz-opacity: 0.8;
}


a.aero:link, a.aero:visited, a.aero:active
{
    color: #ffffff; /*button text color*/
}

a.aero span
{
    background: transparent url('/images/blue_right_23.png') no-repeat top right;
    display: block;
    padding: 4px 10px 6px 0; /*Set 10px here to match value of 'padding-left' value above*/
}

a.aero:hover, a.aero:focus
{
    /* Hover state CSS */
    filter: alpha(opacity=100); /*this and next two rules control opacity of buttons during hover*/
    opacity: 1;
    -moz-opacity: 0.99;
}

a.aero:hover span
{
    /* Hover state CSS (for text) */
    color: #f0f0f0;
}

a.aero:focus span
{
    color: #f0f0f0;
}


.green a.aero
{
    background-image: url('/images/green_left_23.png');
}

.green a.aero span
{
    background-image: url('/images/green_right_23.png');
}