#a-shell{width: 251px; height: 302px; overflow:hidden; position:relative; float: left;}
#b-shell{width: 403px; height: 302px; overflow:hidden; position:relative; float: left;}
#c-shell{width: 251px; height: 302px; overflow:hidden; position:relative; float: left;}


#a{width:2821px; height:302px; overflow:hidden; position:relative;} /*************************the width of the image * the number of the images*/
	#a li{width:251px; height:188px; padding-top:57px; float:left; display:inline;}

#b{width:2821px; height:302px; overflow:hidden; position:relative;}
	#b li{width:403px; height:302px; float:left; display:inline;}

#c{width:2821px; height:302px; overflow:hidden; position:relative;}
	#c li{width:251px; height:188px; padding-top:57px; float:left; display:inline;}




#a li img {
    width: 251px;
    height: 188px;
    border-top: 1px solid #696969;
    border-bottom: 1px solid #696969;
}



#c li img {
    width: 251px;
    height: 188px;
    border-top: 1px solid #696969;
    border-bottom: 1px solid #696969;
}