/* Style sheet Nav */
#nav ul{height:47px;left:17px;top:0;position:relative;list-style: none;}
#nav li{float:left;}
#nav a{height:47px;display:block;}
#nav a span{display:none;}
#nav a.mm_start{width:69px;background: url("_images/mm_start.gif") no-repeat transparent;}
#nav a.mm_lueftungstechnik{width:165px;background: url("_images/mm_lueftungstechnik.gif") no-repeat transparent;}
#nav a.mm_lufthygiene{width:126px;background: url("_images/mm_lufthygiene.gif") no-repeat transparent;}
#nav a.mm_wasserhygiene{width:151px;background: url("_images/mm_wasserhygiene.gif") no-repeat transparent;}
#nav a.mm_kontakt{width:95px;background: url("_images/mm_kontakt.gif") no-repeat transparent;}
#nav a.active,#nav a.active:hover{background-position: 0 -94px;}
#nav a.trail,#nav a.trail:hover{background-position: 0 -94px;}
#nav a:hover{background-position: 0 -47px;}