* {padding:0; margin:0}



.dropdown dt {width:131px; height:54px; cursor:pointer; background:url(../00_images/header/button_what1.png)}

.dropdown dt:hover {background:url(../00_images/header/button_what2.png)}




.dropdown dd {position:absolute; overflow:hidden; width:145px; display:none; background:#fff; z-index:200; opacity:0}

.dropdown ul {width:143px; border:1px solid #666666; list-style:none; border-top:none}

.dropdown li {display:inline}

.dropdown a, .dropdown a:active, .dropdown a:visited {display:block; padding:8px; color:#333; text-decoration:none; background:#eaf0f2; width:127px}

.dropdown a:hover {background:#d9e1e4; color:#000}

.dropdown .underline {border-bottom:1px solid #b9d6dc}