.header
{
    width: 100%;
    position: relative;
    background: #524c43;
    margin: 0 auto;
}
.header img
{
    width: 100%;
    display: block;
}
.nav
{
    width: 100%;
    position: absolute;
    height: 65px;
    top: 0;
    left: 0;
    background:#000;
	filter:alpha(opacity=75);  /*支持 IE 浏览器*/
-moz-opacity:0.75; /*支持 FireFox 浏览器*/
opacity:0.75; 
}
.logo
{
    float: left;
    width: 15%;
    height: 65px;margin-left:10% 
}
.logo img{width:295px;height:65px;margin-left:100px}
.navCell
{
    float: left;
    width: 75%;
}
.navCell ul li
{
    float: left;
    height: 65px;
    line-height: 65px;
    padding-left: 60px;
    cursor: pointer;
	
}
.navCell ul li:first-child
{
    padding-left:22%;
}
.navCell ul li a
{
    font-size: 14px;
    color: #fff;
}
.main
{
    width: 100%;
    background: #fff;
}

.main .imgCell
{
    width: 1200px;
    position: relative;
    margin:0 auto;
}
.main .jpg_bgc
{

    margin: 0 auto; 
}


.imgCell .hidImg{display:none;position:fixed;width:50%;top:0;}