function mainmenu(){
$(" #blk-barnav ul ").css({display: "none"}); // Opera Fix
$(" #blk-barnav li").hover(function() {
		$(this).find('ul:first').css({visibility: "visible",display: "none"}).fadeIn(400);
		},function(){
		$(this).find('ul:first').css({visibility: "hidden"});
		});
}

$(document).ready(function() {
    mainmenu();
});