<div class="horizontalcssmenu">
<ul id="cssmenu1">
<li style="border-left: 1px solid #202020;">
  <a href="https://function-code.blogspot.com/">Memu 1</a></li>
<li><a href="https://function-code.blogspot.com/search/label/HTML">Menu 2</a></li>
<li><a href="https://function-code.blogspot.com/search/label/CSS">Menu 3</a></li>
<li><a href="https://function-code.blogspot.com/">Menu 4</a>
    <ul>
<li><a href="https://function-code.blogspot.com/">Submenu 4-1</a></li>
<li><a href="https://function-code.blogspot.com/">Submenu 4-2</a></li>
<li><a href="https://function-code.blogspot.com/">Submenu 4-3</a></li>
</ul>
</li>
<li><a href="https://function-code.blogspot.com/search/label/JavaScript">Menu 5</a></li>
<li><a href="https://function-code.blogspot.com/">Menu 6</a>
    <ul>
<li><a href="https://function-code.blogspot.com/">Submenu 6-1</a></li>
<li><a href="https://function-code.blogspot.com/">Submenu 6-2</a></li>
<li><a href="https://function-code.blogspot.com/">Submenu 6-3</a></li>
<li><a href="https://function-code.blogspot.com/">Submenu 6-4</a></li>
<li><a href="https://function-code.blogspot.com/">Submenu 6-5</a></li>
<li><a href="https://function-code.blogspot.com/">Submenu 6-6</a></li>
</ul>
</li>
</ul>
</div>
.horizontalcssmenu ul{
margin: 0;
padding: 0;
list-style-type: none;
}
/*Top level list items*/
.horizontalcssmenu ul li{
margin: 0;
position: relative;
display: inline;
float: left;
}
/*Top level menu link items style*/
.horizontalcssmenu ul li a{
display: block;
width: 110px; /*Width of top level menu link items*/
padding: 2px 8px;
border: 1px solid #202020;
border-left-width: 0;
text-decoration: none;
background: url(menubg.gif) center center repeat-x;
color: black;
font: bold 13px Tahoma;
}
/*Sub level menu*/
.horizontalcssmenu ul li ul{
left: 0;
top: 0;
border-top: 1px solid #202020;
position: absolute;
display: block;
visibility: hidden;
z-index: 100;
}
/*Sub level menu list items*/
.horizontalcssmenu ul li ul li{
display: inline;
float: none;
}
/* Sub level menu links style */
.horizontalcssmenu ul li ul li a{
width: 160px; /*width of sub menu levels*/
font-weight: normal;
padding: 2px 5px;
background: #e3f1bd;
border-width: 0 1px 1px 1px;
}
.horizontalcssmenu ul li a:hover{
color:#000;
background: url(menubgover.gif) center center repeat-x;
}
.horizontalcssmenu ul li ul li a:hover{
color:#000;
background: #cde686;
}
.horizontalcssmenu .arrowdiv{
position: absolute;
right: 0;
background: transparent url(menuarrow.gif) no-repeat center left;
}
* html p#iepara{ /*For a paragraph (if any) that immediately follows menu, add 1em top spacing between the two in IE*/
padding-top: 1em;
}
var cssmenuids=["cssmenu1"] //Enter id(s) of CSS Horizontal UL menus, separated by commas
var csssubmenuoffset=-1 //Offset of submenus from main menu. Default is 0 pixels.

function createcssmenu2(){
for (var i=0; i < cssmenuids.length; i++){
  var ultags=document.getElementById(cssmenuids[i]).getElementsByTagName("ul")
    for (var t=0; t < ultags.length; t++){
  ultags[t].style.top=ultags[t].parentNode.offsetHeight+csssubmenuoffset+"px"
      var spanref=document.createElement("span")
  spanref.className="arrowdiv"
  spanref.innerHTML="    "
  ultags[t].parentNode.getElementsByTagName("a")[0].appendChild(spanref)
      
  ultags[t].parentNode.onmouseover=function(){
    this.style.zIndex=100
        this.getElementsByTagName("ul")[0].style.visibility="visible"
    this.getElementsByTagName("ul")[0].style.zIndex=0
        }

      ultags[t].parentNode.onmouseout=function(){
    this.style.zIndex=0
    this.getElementsByTagName("ul")[0].style.visibility="hidden"
    this.getElementsByTagName("ul")[0].style.zIndex=100
        }
    }
  }
}

if (window.addEventListener)
window.addEventListener("load", createcssmenu2, false)
else if (window.attachEvent)
window.attachEvent("onload", createcssmenu2)

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.