[jQuery] [clueTip] image map area showing alt/title on ie6/7

[ExiE]

I have a tooltip (using clueTip plugin) applied on each <area> tag on
my image map and it's
working fine everywhere but not with IE6 and IE7.

The tooltip show just fine but if the <area> got set 'alt' attribute
IE6/7 display also content of that attribute in default IE tooltip. In
case alt is not set, IE6/7 display content of 'title' but it can't be
removed coz 'title' is the source of data for clueTip tooltip.

sample of the code:

<script type="text/javascript">
$(document).ready(function() {
  $('area.tipek').cluetip({
        dropShadow: false,
        width: '240px',
    splitTitle: '|',
    showTitle: false
  });
});
</script>

<area class="tipek" shape="rect" alt="Lochovice" title="Meterologická
stanice Lochovice|Zatím neošetřujte" coords="172,173,181,182"
href="#" />

Any ideas how to fix that behavior? Thank for any help!