#dropdownpanel{ /*Outermost Panel DIV*/
position: absolute;
width: 100%;
left: 0;
top: 0;
visibility:hidden;
}

#dropdownpanel .contentdiv{ /*Div containing Ajax content*/
background: black;
color: white;
padding: 10px;
}

#dropdownpanel .control{ /*Div containing panel button*/
border-top: 5px solid black;
color: white;
font-weight: bold;
text-align: center;
background: transparent url("panel.gif") center center no-repeat; /*change panel.gif to your own if desired*/
padding-bottom: 3px; /* 21px + 3px should equal height of "panel.gif" */
height: 21px; /* 21px + 3 px should equal height of "panel.gif" */
line-height: 21px; /* 21px + 3px should equal height of "panel.gif" */
}