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BeTheBall -> Odd Behaviour (5/15/2006 14:59:07)
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I am trying to add the"Son of Suckerfish" menu to a site I am working on. This menu takes an unordered list and converts it to a dropdown menu system. I observed something that I am having trouble understanding. If I remove the background color from the list it breaks it. This is what happens - the middle and right links expand as they should but as you move the pointer down the sub options the options disappear before you can move the pointer over all of them. This only happens if I remove the background color. I don't understand how a simple attribute like that could have that kind of effect. Here is the code for my test page:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<html>
<head>
<title>Suckerfish Dropdowns - Perciformes!</title>
<style type="text/css">
#nav, #nav ul {
float: left;
width: 100%;
list-style: none;
line-height: 1;
background-color: white;
font-weight: bold;
padding: 0;
border: solid #eda;
border-width: 1px 0;
margin: 0 0 1em 0;
}
#nav a {
display: block;
width: 10em;
w\idth: 6em;
color: #7C6240;
text-decoration: none;
padding: 0.25em 2em;
}
#nav a.daddy {
background: url(rightarrow2.gif) center right no-repeat;
}
#nav li {
float: left;
padding: 0;
width: 10em;
}
#nav li ul {
position: absolute;
left: -999em;
height: auto;
width: 14.4em;
w\idth: 13.9em;
font-weight: normal;
border-width: 0.25em;
margin: 0;
}
#nav li li {
padding-right: 1em;
width: 13em
}
#nav li ul a {
width: 13em;
w\idth: 9em;
}
#nav li ul ul {
margin: -1.75em 0 0 14em;
}
#nav li:hover ul ul, #nav li:hover ul ul ul, #nav li.sfhover ul ul, #nav li.sfhover ul ul ul {
left: -999em;
}
#nav li:hover ul, #nav li li:hover ul, #nav li li li:hover ul, #nav li.sfhover ul, #nav li li.sfhover ul, #nav li li li.sfhover ul {
left: auto;
}
#nav li:hover, #nav li.sfhover {
background: #eda;
}
</style>
<script type="text/javascript"><!--//--><![CDATA[//><!--
sfHover = function() {
var sfEls = document.getElementById("nav").getElementsByTagName("LI");
for (var i=0; i<sfEls.length; i++) {
sfEls.onmouseover=function() {
this.className+=" sfhover";
}
sfEls.onmouseout=function() {
this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
}
}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);
//--><!]]></script>
</head>
<body>
<ul id="nav">
<li><a href="#">Percoidei</a>
<ul>
<li><a href="#" class="daddy">Remoras</a>
<ul>
<li><a href="#" class="daddy">Echeneis</a>
<ul>
<li><a href="#">Sharksucker</a></li>
<li><a href="#">Whitefin Sharksucker</a></li>
</ul>
</li>
<li><a href="#" class="daddy">Phtheirichthys</a>
<ul>
<li><a href="#">Slender Suckerfish</a></li>
</ul>
</li>
<li><a href="#" class="daddy">Remora</a>
<ul>
<li><a href="#">Whalesucker</a></li>
<li><a href="#">Spearfish remora</a></li>
<li><a href="#">Marlinsucker</a></li>
<li><a href="#">Remora</a></li>
<li><a href="#">Ceylonese remora</a></li>
</ul>
</li>
<li><a href="#" class="daddy">Remorina</a>
<ul>
<li><a href="#">White suckerfish</a></li>
</ul>
</li>
<li><a href="#" class="daddy">Rhombochirus</a>
<ul>
<li><a href="#">R. osteochir</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="#" class="daddy">Tilefishes</a>
<ul>
<li><a href="#">Caulolatilus</a></li>
<li><a href="#">Lopholatilus</a></li>
<li><a href="#">Malacanthus</a></li>
</ul>
</li>
<li><a href="#" class="daddy">Bluefishes</a>
<ul>
<li><a href="#">Pomatomus</a></li>
<li><a href="#">Scombrops</a></li>
<li><a href="#">Sphyraenops</a></li>
</ul>
</li>
<li><a href="#" class="daddy">Tigerfishes</a>
<ul>
<li><a href="#">Amniataba</a></li>
<li><a href="#">Bidyanus</a></li>
<li><a href="#">Hannia</a></li>
<li><a href="#">Hephaestus</a></li>
<li><a href="#">Lagusia</a></li>
<li><a href="#">Leiopotherapon</a></li>
<li><a href="#">Mesopristes</a></li>
<li><a href="#">Pelates</a></li>
<li><a href="#">Pelsartia</a></li>
<li><a href="#">Pingalla</a></li>
<li><a href="#">Rhyncopelates</a></li>
<li><a href="#">Scortum</a></li>
<li><a href="#">Syncomistes</a></li>
<li><a href="#">Terapon</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="#">Anabantoidei</a>
<ul>
<li><a href="#" class="daddy">Climbing perches</a>
<ul>
<li><a href="#">Anabas</a></li>
<li><a href="#">Ctenopoma</a></li>
</ul>
</li>
<li><a href="#" class="daddy">Labyrinthfishes</a>
<ul>
<li><a href="#">Belontia</a></li>
<li><a href="#">Betta</a></li>
<li><a href="#">Colisa</a></li>
<li><a href="#">Macropodus</a></li>
<li><a href="#">Malpulutta</a></li>
<li><a href="#">Parosphromenus</a></li>
<li><a href="#">Sphaerichthys</a></li>
<li><a href="#">Trichogaster</a></li>
<li><a href="#">Trichopsis</a></li>
</ul>
</li>
<li><a href="#">Kissing gouramis</a></li>
<li><a href="#">Pike-heads</a></li>
<li><a href="#">Giant gouramis</a></li>
</ul>
</li>
<li><a href="#">Gobioidei</a>
<ul>
<li><a href="#">Burrowing gobies</a></li>
<li><a href="#">Dartfishes</a></li>
<li><a href="#">Eellike gobies</a></li>
<li><a href="#">Gobies</a></li>
<li><a href="#">Loach gobies</a></li>
<li><a href="#">Odontobutidae</a></li>
<li><a href="#">Sandfishes</a></li>
<li><a href="#">Schindleriidae</a></li>
<li><a href="#">Sleepers</a></li>
<li><a href="#">Xenisthmidae</a></li>
</ul>
</li>
</ul>
</body>
</html>
View the page in IE and it should work fine. Then remove this line:
background-color: white;
Hover over the items in the center and right lists and you should see what I am talking about.
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