Ya lo conseguí.Por si a alguien le interesa dejo aquí el código:
Código HTML:
<html>
<head>
<!-- Consigue este JavaScript y otros muchos en MundoJavaScript.com -->
<style>
<!--
.menuskin{
position:absolute;
width:200px;
background-color:#84AA00;
border:2px solid #7093DB;
font:normal 12px Verdana;
line-height:18px;
z-index:100;
visibility:hidden;
}
.menuskin a{
text-decoration:none;
color:black;
padding-left:10px;
padding-right:10px;
}
#mouseoverstyle{
background-color:highlight;
}
#mouseoverstyle a{
color:white;
}
-->
</style>
<script language="JavaScript1.2">
//Pop-it menu- By Dynamic Drive
//For full source code and more DHTML scripts, visit http://www.dynamicdrive.com
//This credit MUST stay intact for use
var linkset=new Array()
//SPECIFY MENU SETS AND THEIR LINKS. FOLLOW SYNTAX LAID OUT
linkset[0]='<div class="menuitems"><a>inet=>ip:ip-address:port</a></div>'
linkset[0]+='<div class="menuitems"><a>unix=>local:/path/to/unix/socket</a></div>'
linkset[1]+='<div class="menuitems"><a>address@domain.*</a></div>'
linkset[2]+='<div class="menuitems"><a>server_name:port</a></div>'
////No need to edit beyond here
var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1
var ns6=document.getElementById&&!document.all
var ns4=document.layers
function showmenu(e,which){
if (!document.all&&!document.getElementById&&!document.layers)
return
clearhidemenu()
menuobj=ie4? document.all.popmenu : ns6? document.getElementById("popmenu") : ns4? document.popmenu : ""
menuobj.thestyle=(ie4||ns6)? menuobj.style : menuobj
if (ie4||ns6)
menuobj.innerHTML=which
else{
menuobj.document.write('<layer name=gui bgColor=#E6E6E6 width=165 onmouseover="clearhidemenu()" onmouseout="hidemenu()">'+which+'</layer>')
menuobj.document.close()
}
menuobj.contentwidth=(ie4||ns6)? menuobj.offsetWidth : menuobj.document.gui.document.width
menuobj.contentheight=(ie4||ns6)? menuobj.offsetHeight : menuobj.document.gui.document.height
eventX=ie4? event.clientX : ns6? e.clientX : e.x
eventY=ie4? event.clientY : ns6? e.clientY : e.y
//Find out how close the mouse is to the corner of the window
var rightedge=ie4? document.body.clientWidth-eventX : window.innerWidth-eventX
var bottomedge=ie4? document.body.clientHeight-eventY : window.innerHeight-eventY
//if the horizontal distance isn't enough to accomodate the width of the context menu
if (rightedge<menuobj.contentwidth)
//move the horizontal position of the menu to the left by it's width
menuobj.thestyle.left=ie4? document.body.scrollLeft+eventX-menuobj.contentwidth : ns6? window.pageXOffset+eventX-menuobj.contentwidth : eventX-menuobj.contentwidth
else
//position the horizontal position of the menu where the mouse was clicked
menuobj.thestyle.left=ie4? document.body.scrollLeft+eventX : ns6? window.pageXOffset+eventX : eventX
//same concept with the vertical position
if (bottomedge<menuobj.contentheight)
menuobj.thestyle.top=ie4? document.body.scrollTop+eventY-menuobj.contentheight : ns6? window.pageYOffset+eventY-menuobj.contentheight : eventY-menuobj.contentheight
else
menuobj.thestyle.top=ie4? document.body.scrollTop+event.clientY : ns6? window.pageYOffset+eventY : eventY
menuobj.thestyle.visibility="visible"
return false
}
function contains_ns6(a, b) {
//Determines if 1 element in contained in another- by Brainjar.com
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}
function hidemenu(){
if (window.menuobj)
menuobj.thestyle.visibility=(ie4||ns6)? "hidden" : "hide"
}
function dynamichide(e){
if (ie4&&!menuobj.contains(e.toElement))
hidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
hidemenu()
}
function delayhidemenu(){
if (ie4||ns6||ns4)
delayhide=setTimeout("hidemenu()",500)
}
function clearhidemenu(){
if (window.delayhide)
clearTimeout(delayhide)
}
function highlightmenu(e,state){
if (document.all)
source_el=event.srcElement
else if (document.getElementById)
source_el=e.target
if (source_el.className=="menuitems"){
source_el.id=(state=="on")? "mouseoverstyle" : ""
}
else{
while(source_el.id!="popmenu"){
source_el=document.getElementById? source_el.parentNode : source_el.parentElement
if (source_el.className=="menuitems"){
source_el.id=(state=="on")? "mouseoverstyle" : ""
}
}
}
}
if (ie4||ns6)
document.onclick=hidemenu
</script>
</head>
<body>
<div id="popmenu" class="menuskin" onMouseover="clearhidemenu();highlightmenu(event,'on')" onMouseout="highlightmenu(event,'off');dynamichide(event)">
</div>
<a onMouseover="showmenu(event,linkset[0])" onMouseout="delayhidemenu()"><img src="icon-info.gif"></a><br>
<a onMouseover="showmenu(event,linkset[1])" onMouseout="delayhidemenu()"><img src="icon-info.gif"</a><br>
</body>
</html>