I'm using a tooltip that works in FF, Chrome, and IE7-8, but in IE6 it doesn't appear. You can go to this page http://www.avaline.com/ Bags/ Eco-Friendly-Bags/R1500 and login with [email protected] password:test02, then hit the "add to cart" button and hover over the question marks to see (or not see) the tooltips.

This is the relevant HTML and CSS:

<DIV class=oewBox id=oewImpLocDiv style="BACKGROUND-IMAGE: url(/images/img/org4.gif)">
<A class=tooltip href="#"><SPAN class=""><STRONG>More than 2 imprint locations?</STRONG> Test </SPAN></A>
</DIV>

<style>
/* Rule from element "style" attribute */
element.style {
    BACKGROUND-IMAGE: url(/images/img/org4.gif)
}
/* Rule N°8 from inline stylesheet */
.oewBox {
    PADDING-RIGHT: 8px;
    PADDING-LEFT: 40px;
    PADDING-BOTTOM: 16px;
    MARGIN: 0px 0px 6px;
    PADDING-TOP: 6px;
    BORDER-BOTTOM: #ff7c14 3px solid
}
/* Rule N°7 from inline stylesheet */
.oewBox {
    BACKGROUND-POSITION: 0px 0px;
    BACKGROUND-IMAGE: none;
    BACKGROUND-REPEAT: no-repeat
}
/* Rule N°11 from /site/av-files/mainstyles.css */
A:active {
    COLOR: #3b88c4;
    TEXT-DECORATION: none
}
/* Rule N°10 from /site/av-files/mainstyles.css */
A:hover {
    COLOR: #000;
    TEXT-DECORATION: none
}
/* Rule N°9 from /site/av-files/mainstyles.css */
A:visited {
    COLOR: #3b88c4;
    TEXT-DECORATION: underline
}
/* Rule N°8 from /site/av-files/mainstyles.css */
A:link {
    COLOR: #3b88c4;
    TEXT-DECORATION: underline
}
/* Rule N°7 from /site/av-files/mainstyles.css */
A {
    COLOR: #3b88c4;
    TEXT-DECORATION: underline
}
/* Rule N°52 from inline stylesheet */
A.tooltip {
    BACKGROUND: url(/images/img/question.gif) no-repeat;
    FLOAT: right;
    WIDTH: 19px;
    HEIGHT: 20px
}
/* Rule N°54 from inline stylesheet */
A.tooltip:hover SPAN {
    BORDER-RIGHT: #ff7c14 1px solid;
    BORDER-TOP: #ff7c14 1px solid;
    DISPLAY: inline;
    BACKGROUND: #ffffff;
    BORDER-LEFT: #ff7c14 1px solid;
    COLOR: #000;
    BORDER-BOTTOM: #ff7c14 1px solid;
    POSITION: absolute
}
/* Rule N°53 from inline stylesheet */
A.tooltip SPAN {
    PADDING-RIGHT: 3px;
    DISPLAY: none;
    PADDING-LEFT: 3px;
    FONT-WEIGHT: normal;
    FONT-SIZE: 11px;
    PADDING-BOTTOM: 2px;
    MARGIN-LEFT: -245px;
    WIDTH: 230px;
    PADDING-TOP: 2px
}
</style>