desired effect: for example: click on the man, pop up to expand the men"s navigation bar on the right, and how to modify jquery to achieve this function 
 
 
 
this is the html section
<header class="headroom">
    <a id="cd-logo" href="index.html"><img src="img/logo.png" alt="Homepage"></a>
    <a id="cd-menu-trigger" href="-sharp0"><span class="cd-menu-icon"></span></a>
</header>
<main class="cd-main-content">
   <div class="container product-main">
    <div class="row">
        <h2 style="text-align: center;margin-bottom:30px;"></h2>
        <div class="col-md-6 .col-xs-12"><a href="javascript:void(0)"><img src="img/product/man.jpg" class="img-responsive" id="hotimg"><h1 id="hotbutton"> </h1></a></div>
        <div class="col-md-6 .col-xs-12"><a href="javascript:void(0)"><img src="img/product/woman.jpg" class="img-responsive" id="hotimg"><h1 id="hotbutton"> </h1></a></div>
        <div class="col-md-6 .col-xs-12"><a href="javascript:void(0)"><img src="img/product/kid.jpg" class="img-responsive" id="hotimg"><h1 id="hotbutton"> </h1></a></div>
        <div class="col-md-6 .col-xs-12"><a href="javascript:void(0)"><img src="img/product/gear.jpg" class="img-responsive" id="hotimg"><h1 id="hotbutton"> </h1></a></div>
    </div>
</div>
</main> <!-- cd-main-content -->
<nav id="cd-lateral-nav">
    <ul class="cd-navigation">
        <li class="item-has-children">
            <a href="-sharp0"></a>
            <ul class="sub-menu">
                <li class="item-has-children">
                    <a href="-sharp0"></a>
                    <ul class="sub-menu">
                        <li><a href="mxc.html"></a></li>
                        <li><a href="msmc.html"></a></li>
                        <li><a href="mshh.html"></a></li>
                        <li><a href="mwl.html"></a></li>
                        <li><a href="mld.html"></a></li>
                        <li><a href="mzgf.html"></a></li>
                        <li><a href="mlf.html"></a></li>
                        <li><a href="myl.html"></a></li>
                    </ul>
                </li> <!-- item-has-children -->
                <li class="item-has-children">
                    <a href="-sharp0"></a>
                    <ul class="sub-menu">
                        <li><a href="mbg.html"></a></li>
                        <li><a href="mlt.html"></a></li>
                        <li><a href="mft.html"></a></li>
                    </ul>
                </li> <!-- item-has-children -->
                <li class="item-has-children">
                    <a href="-sharp0"></a>
                    <ul class="sub-menu">
                        <li><a href="mfybx.html"></a></li>
                        <li><a href="mfs.html"></a></li>
                        <li><a href="msmy.html"></a></li>
                        <li><a href="myddk.html"></a></li>
                    </ul>
                </li> <!-- item-has-children -->
            </ul>
        </li> <!-- item-has-children -->
        <li class="item-has-children">
            <a href="-sharp0"></a>
            <ul class="sub-menu">
                <li class="item-has-children">
                    <a href="-sharp0"></a>
                    <ul class="sub-menu">
                        <li><a href="wxc.html"></a></li>
                        <li><a href="wsmc.html"></a></li>
                        <li><a href="wshh.html"></a></li>
                        <li><a href="wwl.html"></a></li>
                        <li><a href="wld.html"></a></li>
                        <li><a href="wzgf.html"></a></li>
                        <li><a href="wlf.html"></a></li>  
                    </ul>
                </li> <!-- item-has-children -->
                <li class="item-has-children">
                    <a href="-sharp0"></a>
                    <ul class="sub-menu">
                        <li><a href="wxwy.html"></a></li>
                        <li><a href="wlt.html"></a></li>
                        <li><a href="wft.html"></a></li>
                    </ul>
                </li> <!-- item-has-children -->
                <li class="item-has-children">
                    <a href="-sharp0"></a>
                    <ul class="sub-menu">
                        <li><a href="wfybx.html"></a></li>
                        <li><a href="wfs.html"></a></li>
                        <li><a href="wsmy.html"></a></li>
                        <li><a href="wyddk.html"></a></li>
                    </ul>
                </li> <!-- item-has-children -->
            </ul>
        </li> <!-- item-has-children -->
        <li class="item-has-children" id="kid-nav">
            <a href="-sharp0"></a>
            <ul class="sub-menu">
                <li><a href="klt.html"></a></li>
                <li><a href="kjk.html"></a></li>
            </ul>
        </li> <!-- item-has-children -->
        <li class="item-has-children" id="gear-nav">
            <a href="-sharp0"></a>
            <ul class="sub-menu">
                <li><a href="ptt.html"></a></li>
                <li><a href="pst.html"></a></li>
                <li><a href="pctw.html"></a></li>
                <li><a href="pjw.html"></a></li>
                <li><a href="pxl.html"></a></li>
                <li><a href="ppzsd.html"></a></li>
                <li><a href="pmjd.html"></a></li>
            </ul>
        </li> <!-- item-has-children -->
    </ul> <!-- cd-navigation -->
    <ul class="cd-navigation cd-single-item-wrapper">
        <li><a href="so.html">SAVE OCEAN </a></li>
        <li><a href="st.html"></a></li>
    </ul> <!-- cd-single-item-wrapper -->
</nav>
this is the js section
jQuery(document).ready(function($){
    var $lateral_menu_trigger = $("-sharpcd-menu-trigger"),
        $content_wrapper = $(".cd-main-content"),
        $navigation = $("header");
    //open-close lateral menu clicking on the menu icon
    $lateral_menu_trigger.on("click", function(event){
        event.preventDefault();
        
        $lateral_menu_trigger.toggleClass("is-clicked");
        $navigation.toggleClass("lateral-menu-is-open");
        $content_wrapper.toggleClass("lateral-menu-is-open").one("webkitTransitionEnd otransitionend oTransitionEnd msTransitionEnd transitionend", function(){
            // firefox transitions break when parent overflow is changed, so we need to wait for the end of the trasition to give the body an overflow hidden
            $("body").toggleClass("overflow-hidden");
        });
        $("-sharpcd-lateral-nav").toggleClass("lateral-menu-is-open");
        
        //check if transitions are not supported - i.e. in IE9
        if($("html").hasClass("no-csstransitions")) {
            $("body").toggleClass("overflow-hidden");
        }
    });
    //close lateral menu clicking outside the menu itself
    $content_wrapper.on("click", function(event){
        if( !$(event.target).is("-sharpcd-menu-trigger, -sharpcd-menu-trigger span") ) {
            $lateral_menu_trigger.removeClass("is-clicked");
            $navigation.removeClass("lateral-menu-is-open");
            $content_wrapper.removeClass("lateral-menu-is-open").one("webkitTransitionEnd otransitionend oTransitionEnd msTransitionEnd transitionend", function(){
                $("body").removeClass("overflow-hidden");
            });
            $("-sharpcd-lateral-nav").removeClass("lateral-menu-is-open");
            //check if transitions are not supported
            if($("html").hasClass("no-csstransitions")) {
                $("body").removeClass("overflow-hidden");
            }
        }
    });
    //open (or close) submenu items in the lateral menu. Close all the other open submenu items.
    $(".item-has-children").children("a").on("click", function(event){
        event.preventDefault();
        $(this).toggleClass("submenu-open").next(".sub-menu").slideToggle(200).end().parent(".item-has-children").siblings(".item-has-children").children("a").removeClass("submenu-open").next(".sub-menu").slideUp(200);
    });
});
this is the css section
.cd-main-content {
  /* set a min-height and a z-index to be sure that the main element completely covers the lateral menu */
  min-height: 100%;
  position: relative;
  background-color: white;
  z-index: 2;
  padding-top: 50px;
  /* Force Hardware Acceleration in WebKit */
  -webkit-transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  -webkit-transition-property: -webkit-transform;
  -moz-transition-property: -moz-transform;
  transition-property: transform;
  -webkit-transition-duration: 0.4s;
  -moz-transition-duration: 0.4s;
  transition-duration: 0.4s;
}
.cd-main-content.lateral-menu-is-open {
  /* translate to show the lateral menu - all content needs to be put in the .cd-main-content to translate*/
  -webkit-transform: translateX(-260px);
  -moz-transform: translateX(-260px);
  -ms-transform: translateX(-260px);
  -o-transform: translateX(-260px);
  transform: translateX(-260px);
}
@media only screen and (min-width: 768px) {
  .cd-main-content {
    padding-top: 70px;
  }
}
header {
  position: absolute;
  top: 0;
  left: 0;
  height: 75px;
  width: 100%;
  background: -sharp222222;
  z-index: 3;
  /* Force Hardware Acceleration in WebKit */
  -webkit-transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  -webkit-transition-property: -webkit-transform;
  -moz-transition-property: -moz-transform;
  transition-property: transform;
  -webkit-transition-duration: 0.4s;
  -moz-transition-duration: 0.4s;
  transition-duration: 0.4s;
}
header.lateral-menu-is-open {
  /* translate to show the lateral menu */
  -webkit-transform: translateX(-260px);
  -moz-transform: translateX(-260px);
  -ms-transform: translateX(-260px);
  -o-transform: translateX(-260px);
  transform: translateX(-260px);
}
header.is-fixed {
  position: fixed;
}
@media only screen and (min-width: 768px) {
  header {
    height: 75px;
  }
}
-sharpcd-logo {
  display: block;
  float: left;
  margin: 25px 0 0 25px;
}
-sharpcd-logo img {
  display: block;
  height: 20px;
}
@media only screen and (min-width: 768px) {
  -sharpcd-logo {
    margin: 25px 0 0 142px;
  }
}
-sharpcd-top-nav {
  position: absolute;
  top: 0;
  right: 120px;
  height: 100%;
  display: none;
}
-sharpcd-top-nav ul {
  height: 100%;
  padding-top: 18px;
}
-sharpcd-top-nav li {
  display: inline-block;
  margin-right: 1em;
}
-sharpcd-top-nav a {
  display: inline-block;
  padding: .5em;
  color: -sharpFFF;
  text-transform: uppercase;
  font-weight: 600;
}
-sharpcd-top-nav a.current {
  background-color: -sharp242e30;
}
.no-touch -sharpcd-top-nav a:hover {
  color: rgba(255, 255, 255, 0.7);
}
@media only screen and (min-width: 768px) {
  -sharpcd-top-nav {
    display: block;
  }
}
-sharpcd-lateral-nav {
  font-size: 1.2em;
}
-sharpcd-menu-trigger {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  width: 50px;
  background-color: -sharp222222;
}
-sharpcd-menu-trigger .cd-menu-text {
  height: 100%;
  text-transform: uppercase;
  color: -sharpFFF;
  font-weight: 600;
  display: none;
}
-sharpcd-menu-trigger .cd-menu-icon {
  /* this span is the central line in the menu menu */
  display: inline-block;
  position: absolute;
  left: 50%;
  top: 50%;
  bottom: auto;
  right: auto;
  -webkit-transform: translateX(-50%) translateY(-50%);
  -moz-transform: translateX(-50%) translateY(-50%);
  -ms-transform: translateX(-50%) translateY(-50%);
  -o-transform: translateX(-50%) translateY(-50%);
  transform: translateX(-50%) translateY(-50%);
  width: 18px;
  height: 2px;
  background-color: -sharpFFF;
  /* these are the upper and lower lines in the menu menu */
}
-sharpcd-menu-trigger .cd-menu-icon::before, -sharpcd-menu-trigger .cd-menu-icon:after {
  content: "";
  width: 100%;
  height: 100%;
  position: absolute;
  background-color: inherit;
  left: 0;
  /* Force Hardware Acceleration in WebKit */
  -webkit-transform: translateZ(0);
  -webkit-backface-visibility: hidden;
}
-sharpcd-menu-trigger .cd-menu-icon::before {
  bottom: 5px;
}
-sharpcd-menu-trigger .cd-menu-icon::after {
  top: 5px;
}
-sharpcd-menu-trigger.is-clicked .cd-menu-icon {
  background-color: rgba(255, 255, 255, 0);
}
-sharpcd-menu-trigger.is-clicked .cd-menu-icon::before, -sharpcd-menu-trigger.is-clicked .cd-menu-icon::after {
  background-color: white;
}
-sharpcd-menu-trigger.is-clicked .cd-menu-icon::before {
  bottom: 0;
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
}
-sharpcd-menu-trigger.is-clicked .cd-menu-icon::after {
  top: 0;
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
  -o-transform: rotate(-45deg);
  transform: rotate(-45deg);
}
@media only screen and (min-width: 768px) {
  -sharpcd-menu-trigger {
    width: 110px;
    padding-left: 1.25em;
  }
  -sharpcd-menu-trigger .cd-menu-text {
    display: inline-block;
    line-height: 70px;
  }
  -sharpcd-menu-trigger .cd-menu-icon {
    left: auto;
    right: 1.25em;
    -webkit-transform: translateX(0);
    -moz-transform: translateX(0);
    -ms-transform: translateX(0);
    -o-transform: translateX(0);
    transform: translateX(0);
  }
}
-sharpcd-lateral-nav {
  position: fixed;
  height: 100%;
  right: 0;
  top: 0;
  /* the secondary navigation is covered by the main element */
  z-index: 1;
  width: 260px;
  background-color: -sharp242e30;
  overflow-y: auto;
  /* Force Hardware Acceleration in WebKit */
  -webkit-transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  -webkit-transition-property: -webkit-transform;
  -moz-transition-property: -moz-transform;
  transition-property: transform;
  -webkit-transition-duration: 0.4s;
  -moz-transition-duration: 0.4s;
  transition-duration: 0.4s;
  /* this creates the subtle slide in animation of the navigation */
  -webkit-transform: translateX(80px);
  -moz-transform: translateX(80px);
  -ms-transform: translateX(80px);
  -o-transform: translateX(80px);
  transform: translateX(80px);
}
-sharpcd-lateral-nav .cd-navigation {
  margin: 10px 0 16px;
}
-sharpcd-lateral-nav .sub-menu {
  padding: 0 10px 20px 15px;
  display: none;
}
-sharpcd-lateral-nav a {
  display: block;
  line-height: 4em;
  padding: 0 16px 0 32px;
  color: -sharpaab5b7;
}
-sharpcd-lateral-nav a.current {
  background-color: -sharp3a4a4d;
  color: -sharpFFF;
}
.no-touch -sharpcd-lateral-nav a:hover {
  color: -sharpFFF;
}
@media only screen and (min-width: 768px) {
  -sharpcd-lateral-nav .cd-navigation {
    margin: 20px 0;
  }
}
-sharpcd-lateral-nav.lateral-menu-is-open {
  -webkit-transform: translateX(0);
  -moz-transform: translateX(0);
  -ms-transform: translateX(0);
  -o-transform: translateX(0);
  transform: translateX(0);
  /* smooth the scrolling on touch devices - webkit browsers */
  -webkit-overflow-scrolling: touch;
}
/* style menu items which have a submenu  */
-sharpcd-lateral-nav .item-has-children > a {
  position: relative;
  text-transform: uppercase;
  font-weight: 600;
  /* this is the right arrow to show that the item has a submenu  */
}
-sharpcd-lateral-nav .item-has-children > a::after {
  content: "";
  display: block;
  height: 11px;
  width: 8px;
  position: absolute;
  top: 50%;
  bottom: auto;
  -webkit-transform: translateY(-50%);
  -moz-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  -o-transform: translateY(-50%);
  transform: translateY(-50%);
  right: 1em;
  background: url("../img/cd-arrow.svg") no-repeat center center;
  background-size: 8px 11px;
  -webkit-transition-property: -webkit-transform;
  -moz-transition-property: -moz-transform;
  transition-property: transform;
  -webkit-transition-duration: 0.2s;
  -moz-transition-duration: 0.2s;
  transition-duration: 0.2s;
}
-sharpcd-lateral-nav .item-has-children > a.submenu-open::after {
  -webkit-transform: translateY(-50%) rotate(90deg);
  -moz-transform: translateY(-50%) rotate(90deg);
  -ms-transform: translateY(-50%) rotate(90deg);
  -o-transform: translateY(-50%) rotate(90deg);
  transform: translateY(-50%) rotate(90deg);
}
