.tabcontainer{
clear: left;
width:95%; /*width of 2nd level sub menus*/
height:1.5em; /*height of 2nd level sub menus. Set to largest's sub menu's height to avoid jittering.*/
}

*:first-child+html .ieclass{ /*IE7 hack to remove gap between menu and sub contents*/
margin-top: -1em;
}

* html .ieclass{ /*IE6 and below hack to remove gap between menu and sub contents*/
margin-top: -1em;
}

.tabcontent{
display:none;
}