menu v js

<div id="header">

<a href="index.html" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage('Image2','','images/m1-1.gif',1)"><img src="images/m1.gif" width="141" height="73" alt="" id="Image2" /></a>

<a href="index-1.html" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage('Image3','','images/m2-2.gif',1)"><img src="images/m2.gif" width="142" height="73" alt="" id="Image3" /></a>

<a href="index-2.html" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage('Image4','','images/m3-3.gif',1)"><img src="images/m3.gif" width="142" height="73" alt="" id="Image4" /></a>

<a href="index-3.html" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage('Image5','','images/m4-4.gif',1)"><img src="images/m4.gif" width="142" height="73" alt="" id="Image5" /></a>

<a href="index-4.html" onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage('Image6','','images/m5-5.gif',1)"><img src="images/m5.gif" width="141" height="73" alt=""
id="Image6"/></a>     </div>

function MM_swapImgRestore() {
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_preloadImages() {
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) {
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() {
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

<ul class="top_menu">
<li class="home"><a href="...."  style="background-image:url(./images/menu/xxxx.gif);" class="active"><span>Home</span></a></li>
               
<li class="search"><a href="...." style="background-image:url(./images/menu/xxxx.gif);"><span>Search</span></a></li>
</ul>

.top_menu {height:31px;position:relative;}
.top_menu li {float:left;}
.top_menu li a {display:block;height:31px;width:160px;font-size:0;line-height:0;position:relative;}
.top_menu li a span {display:none;}
.top_menu .home a{background-position:0 0;background-repeat:no-repeat;}
.top_menu .home a:hover, .top_menu .home a.active, .top_menu .home .active:hover {background-position:0 -31px;background-repeat:no-repeat;}
.top_menu .search a{background-position:0 0;background-repeat:no-repeat;}

<div id="menu">
   <ul>
      <li><a href="#">....</a></li>
      <li><a href="#">....</a></li>
      <li><a href="#">....</a></li>
      <li><a href="#">....</a></li>
      <li><a href="#">....</a></li>
   </ul>
</div>

#menu{position:relative;display:block;height:21px;font-size:11px;font-weight:bold;background:transparent url(images/m1.gif) repeat-x top left;font-family:Arial,Verdana,Helvitica,sans-serif;border-bottom:1px solid #d9d9d9;}
#menu ul{margin:0;padding:0;list-style-type:none;width:auto;}
#menu ul li{display:block;float:left;margin:0 1px 0 0;}
#menu ul li a{display:block;float:left;color:#034895;text-decoration:none;padding:3px 20px 0 20px;height:18px;}
#menu ul li a:hover{color:#034895;background:transparent
url(images/m1-1.gif) repeat-x top left;}