ul,li,body,html {margin:0;padding:0;}
.break {clear:both;}
#wrapper {margin:0px}

nav {margin:20px 0;list-style:none;width:989px;height:40px;
    font-family:"Microsoft Yahei","Lucida Sans Unicode","Lucida Grande",Verdana,Arial,Helvetica,sans-serif;letter-spacing:-0.5px;font-size:15px;text-shadow: 0 -1px 3px #202020;
    -moz-border-radius:4px;-webkit-border-radius:4px;border-radius:4px;
    -moz-box-shadow: 0px 3px 3px #cecece;-webkit-box-shadow: 0px 3px 3px #cecece;box-shadow: 0 3px 4px #8b8b8b;
}

nav a {display:block;float:left;outline:none;text-decoration:none;text-align:center;width:121px;height:40px;line-height:40px;color:white;
	border-top:1px solid #797979;border-right:1px solid #5d5d5d;border-bottom:1px solid #575757;border-left:1px solid #929292;
    background-image:-webkit-gradient(linear,left bottom,left top,color-stop(0,#787878),color-stop(0.5,#5E5E5E),color-stop(0.51,#707070),color-stop(1,#838383));
    background-image:-moz-linear-gradient(center bottom,#787878 0%,#5E5E5E 50%,#707070 51%,#838383 100%);
    background-color:#5f5f5f;
}

nav a:hover {
    background-image:-webkit-gradient(linear,left bottom,left top,color-stop(0,#3F3F3F),color-stop(0.5,#383838),color-stop(0.51,#434343),color-stop(1,#555555));
    background-image:-moz-linear-gradient(center bottom,#3F3F3F 0%,#383838 50%,#434343 51%,#555555 100%);
    background-color:#383838;
    -moz-box-shadow:inset 0 0 5px 5px #535353;
    -webkit-box-shadow:inset 0 0 5px 5px #535353;
    box-shadow:inset 0 0 5px 5px #535353;
}

nav a:active {
    background-image:-webkit-gradient(linear,left bottom,left top,color-stop(0,#3F3F3F),color-stop(0.5,#383838),color-stop(0.51,#434343),color-stop(1,#555555));
    background-image:-moz-linear-gradient(center bottom,#3F3F3F 0%,#383838 50%,#434343 51%,#555555 100%);
    background-color:#383838;
    -moz-box-shadow:inset 0 1px 2px 2px #000;
    -webkit-box-shadow:inset 0 1px 2px 2px #000;
    box-shadow:inset 0 1px 2px 2px #000;
}

nav a:first-child {-moz-border-radius:4px 0 0 4px;-webkit-border-radius:4px 0 0 4px;border-radius:4px 0 0 4px;border-left:none;width:125px;}
nav a:last-child {-moz-border-radius:0 4px 4px 0;-webkit-border-radius:0 4px 4px 0;border-radius:0 4px 4px 0;border-right:none;width:124px;}