#bigmenu {position: relative; margin: 0px 0 0 0; padding: 0px; width: 850px; height: 185px;}
#bigmenu li {width: 283px; height: 185px; position: absolute; top: 0px; background: url(assets/bigmenu.jpg) 0 0 no-repeat; display: block; list-style: none;}
#bigmenu a {width: px; height: 185px; display: block; border: none;}
#bigmenu a:hover {}
#bigmenu #big1c {left: 0px;}
#bigmenu #big2c {left: 283px; background-position: -283px 0;}
#bigmenu #big3c {left: 566px; background-position: -566px 0;}

#bigmenu #big1c a:hover {background: url(assets/bigmenu.jpg) 0px -185px no-repeat;}
#bigmenu #big2c a:hover {background: url(assets/bigmenu.jpg) -283px -185px no-repeat;}
#bigmenu #big3c a:hover {background: url(assets/bigmenu.jpg) -566px -185px no-repeat;}