[Typo3] tmenu_layers will not disappear

[Sander (AlterNET)]

hey,

i have a 3 level dropdown menu, 1st and 2nd level are tmenu_layers and 
3rd level is a tmenu.

Problem is that when i go over them and leave them again, the menu will 
not disappaear, even though i have set:

hideMenuWhenNotOver = 1
hideMenuTimer = 500

It just stays there until i click somewhere on the page.

My complete menu code:

page.includeLibs.tmenu_layers = media/scripts/tmenu_layers.php

temp.menu = HMENU
temp.menu.special = directory
temp.menu.special.value = 2
temp.menu.1 = TMENU_LAYERS
temp.menu.1 {
layerStyle = position:absolute;VISIBILITY:hidden;
relativeToTriggerItem=1
hideMenuWhenNotOver = 1
hideMenuTimer = 500
topOffset=17
leftOffset = -5
expAll=1
wrap = |
NO.allWrap = |
}

# Top Navigation 2nd Level
temp.menu.2 = TMENU_LAYERS
temp.menu.2 {
layerStyle = position:absolute;VISIBILITY:hidden;
relativeToParentLayer = 1
relativeToTriggerItem = 1
relativeToTriggerItem.addWidth = 1
hideMenuWhenNotOver = 1
hideMenuTimer = 500
expAll=1
wrap = |
NO.allWrap =  <span class="topnav2">|</span>
}

# Top Navigation 3rd Level
temp.menu.3 = TMENU
temp.menu.3 {
wrap = |
NO.allWrap =  <span class="topnav3">|</span>
}



What could be wrong?

Thx.