#nav, #nav ul {
  list-style: none;
  margin: 0px;
  padding: 0px;
  float: left;
  width: 100%;
}

#nav li {
  list-style: none;
  float: left;
  position: relative;
}

#nav a { /* top-line */
  text-decoration: none;
  display: block;
  padding: 2px 10px;
/*  background: #67A3A1; использую из CSS*/
}
#nav a:hover {
  color: white;
  background: #54817D;
}
/*
#nav li:hover,
#nav li.jshover {
  background: #BFCCC8;
}
*/

#nav li ul { /* 1t pop-lvl */
  display: none;
  position: absolute;
  background: #DEF3E0;
  border: 1px solid #94D1CB;
  width: 180px;
}
#nav li li a {
  background: none;
  width: 160px;
  border-bottom: dotted 1px #94D1CB;
}
#nav li li.menu_div a {
  background: none;
  width: 160px;
  border-bottom: double 3px #94D1CB;
}
#nav li li.menu_div a:hover {
  background: #848D93;
}

#nav li:hover ul,
#nav li.jshover ul {
  display: block;
}

#nav li:hover li ul,
#nav li.jshover li ul {
  z-index: 2;
  display: none;
  background: #DEF3E0;
  width: 180px;
  top: 5px;
  left: 150px; /* right-shift 2 pop-lvl */
/*  lef\t: 50px;*/
}
#nav li:hover li:hover ul,
#nav li.jshover li.jshover ul {
  display: block;
}