Menus hidden by slide

Change the themes css so the (sub)menu items have a z-index > 81
Unfortunately you disabled the right click so i can not inspect your site easely with firebug to give you more detailed info.

style.min.css line 14 reads:

#branding {
    background: none repeat scroll 0 0 transparent;
    position: relative;
    z-index: 2;
}

Change to

#branding {
    background: none repeat scroll 0 0 transparent;
    position: relative;
    z-index: 200;
}

If you cannot find it, place somewhere in a css:

#branding {
z-index: 200 !important;
}