function rollOver(element) 
{
    for( var x = 0; element.childNodes[x]; x++ )
    {
        if( element.childNodes[x].tagName == 'UL' )
                element.childNodes[x].style.display = 'block';
    }
}

function rollOut(element)
{
    for( var x = 0; element.childNodes[x]; x++ )
    {
        if( element.childNodes[x].tagName == 'UL' )
                element.childNodes[x].style.display = 'none';
    }
}