523119 Drop Down Menu - only 2 levels

I need a regular drop down menu with a tweak. MOST IMPORTANT : Whenever mouse is hovered on any top level item,all children's at level 2 under all parents should be displayed. This will be a 2 level drop down menu only. Format : ul li (Top Level) ul ( Child) li /ul li(Top Level) ul ( Child) li /ul li(Top Level) ul ( Child) li /ul /ul Should be a quick fix for someone experienced.. Need it right away asap.. ( max 4 hours after project acceptance)