.nav-dropdown {
  display: none;
}
.active-trail .nav-dropdown {
  display: block;
}
.nmah-responsive-menu {
	display: none;
}
.nmah-side-menu {
	display:block;
}
/* By default hide all sub-menu items. */
.nmah-side-menu ul ul li {
  display: none !important;
}
/* Show the top level menu. */
.nmah-side-menu > .content > ul > li {
  display: block !important;
}
/* Show the active-trail items. */
.nmah-side-menu ul > li.active-trail {
  display: block !important;
}
/* Show the sub-menu for the current selected menu. */
.nmah-side-menu ul li.active-trail > ul > li {
  display: block !important;
}

/*invoke at 991*/
@media(max-width:991px) {
  .nmah-responsive-menu{
    display:block;
  }
  #block-menu-block-1 ul.menu{
    margin: 0;
  }
  .nmah-side-menu {
    display:none;
  }
  .nmah-responsive-menu .menu:first-child{
    display:none;
  }
  .active-trail .nav-dropdown {
    display: none;
  }
	.has-responsive-menu #sidebar-first{
		padding: 0;
	}
	.nmah-responsive-menu a:hover{
		text-decoration: none;
		background-color: rgba(0,0,0,.05);
	}
	.menu-heading a:hover, .menu-heading a:focus {
		text-decoration: none;
		/*background-color: #f7f6f4;*/
	}
	.heading-double{
		display: block !important;
	}
	#block-exhibit-navigation .exhibit-title{
		text-indent: 0;
		height: auto;
		width: auto;
		margin: -10px -9px 0 !important;
		padding: 10px;
		color: #fff;
		position: relative;
		background: #184562 url(/sites/all/themes/nmah2014/images/arrow-down.png) 95% center no-repeat;
		display: block;
	}
	body.has-responsive-menu #sidebar-first .block-menu-block h2 {
		padding: 20px 0 10px 20px;
	}
	body.has-responsive-menu #sidebar-first .block-menu-block h2 a {
		background: #184562 url(/sites/all/themes/nmah2014/images/arrow-down.png) 95% center no-repeat;
		display: block;
		outline: none;
	}
	#block-exhibit-navigation h2 .exhibit-title.menu-on {
		background: #184562 url(/sites/all/themes/nmah2014/images/arrow-up.png) 95% center no-repeat;
	}
	body.has-responsive-menu #sidebar-first .block-menu-block h2 a.menu-on {
		background: #184562 url(/sites/all/themes/nmah2014/images/arrow-up.png) 95% center no-repeat;
	}
	body.is-exhibit #sidebar-first h2 {
		padding: 10px;
		padding-bottom: 0;
		margin-bottom: 5px;
	}
	body.has-responsive-menu #sidebar-first .nmah-responsive-menu li, body.has-responsive-menu #sidebar-first .block-exhibit li, body.is-exhibit #sidebar-first .block-exhibit li {
		border-bottom: 1px solid #8e6324;
		padding: 0;
		margin: 0;
	}
	body.has-responsive-menu #sidebar-first .nmah-responsive-menu li:last-child, body.has-responsive-menu #sidebar-first .block-exhibit li:last-child, body.is-exhibit #sidebar-first .block-exhibit li:last-child {
		border: none;
	}
	body.has-responsive-menu #sidebar-first .nmah-responsive-menu li a, body.has-responsive-menu #sidebar-first .block-exhibit li a, body.is-exhibit #sidebar-first .block-exhibit li a, body.has-responsive-menu #sidebar-first .nmah-responsive-menu ul ul a, body.has-responsive-menu #sidebar-first .block-exhibit ul ul a, body.is-exhibit #sidebar-first .block-exhibit ul ul a {
		padding: 5px 0 5px 10px;
		display: block;
	}
	#block-menu-block-1 ul.nmah-responsive-menu {
		margin: 0;
		background: #e9e6e0;
	}
	body.has-responsive-menu #sidebar-first .nmah-responsive-menu li.expanded>a {
		background: transparent url(/sites/all/themes/nmah2014/images/arrow-down-brown.png) 95% center no-repeat;
	}
	body.has-responsive-menu #sidebar-first .nmah-responsive-menu li.expanded>a.submenu-on {
		background-image: url(/sites/all/themes/nmah2014/images/arrow-up-brown.png);
	}
	body.has-responsive-menu #sidebar-first .menu-block-1 .nmah-responsive-menu li.active-trail>a, body.has-responsive-menu #sidebar-first .block-exhibit li.active-trail>a, body.is-exhibit #sidebar-first .block-exhibit li.active-trail>a {
		background-color: #fff;
		border-left: 5px solid #ccb179;
	}
	body.has-responsive-menu #sidebar-first .nmah-responsive-menu ul ul, body.has-responsive-menu #sidebar-first .block-exhibit ul ul, body.is-exhibit #sidebar-first .block-exhibit ul ul {
		margin: 0;
		padding: 0;
	}
	body.has-responsive-menu #sidebar-first .nmah-responsive-menu ul ul a, body.has-responsive-menu #sidebar-first .block-exhibit ul ul a, body.is-exhibit #sidebar-first .block-exhibit ul ul a {
		padding-left: 20px;
	}
	body.has-responsive-menu #sidebar-first .nmah-responsive-menu ul ul ul a, body.has-responsive-menu #sidebar-first .block-exhibit ul ul ul a, body.is-exhibit #sidebar-first .block-exhibit ul ul ul a {
		padding-left: 30px;
	}
	body.has-responsive-menu #sidebar-first .nmah-responsive-menu ul ul ul a, body.has-responsive-menu #sidebar-first .block-exhibit ul ul ul a, body.is-exhibit #sidebar-first .block-exhibit ul ul ul a {
		padding-left: 40px;
	}
	body.has-responsive-menu #sidebar-first .block-exhibit-search {
		padding-left: 10px;
	}
	body.has-responsive-menu #sidebar-first .block-exhibit-search .form-type-textfield, body.has-responsive-menu #sidebar-first .block-exhibit-search .form-submit {
		float: left;
		margin: 0;
	}
	body.has-responsive-menu #sidebar-first .block-exhibit-search input {
		height: 29px;
	}
	body.has-responsive-menu #sidebar-first .block-exhibit-search input#edit-keywords {
		width: 360px;
		max-width: 80%;
		margin-bottom: 4px;
	}
	body.has-responsive-menu #sidebar-first .block-exhibit-search .form-submit {
		border-radius: 0;
		margin-left: 4px;
	}
}/*media query 991px*/