.nav ul li{position:relative;}
.nav ul{overflow: visible;}
.sub_UL li{display:block;}
.nav ul li .sub_UL{position:absolute;background:#039268;    height: auto;
    width: 100%;display:none;}
.nav ul li:hover>.sub_UL{display:block;}
.sub_UL li a:hover{background:#eee!important;}