.mainbanner {
	height: 500px; overflow: hidden; position: relative;
}
.mainbanner_window {
	left: 50%; width: 1920px; height: 500px; overflow: hidden; margin-left: -960px; position: absolute;
}
.mainbanner_window ul {
	width: 999999px; height: 500px; position: relative;
}
.mainbanner_window li {
	background: rgb(255, 255, 255); width: 1920px; height: 500px; text-align: center; font-size: 0px; float: left; display: inline;
}
.mainbanner_list {
	left: 50%; top: 450px; width: 500px; height: 30px; margin-left: -75px; position: absolute;
}
.mainbanner_list li {
	width: 30px; height: 30px; overflow: hidden; float: left; display: inline;
}
.mainbanner_list a {
	background: url("../images/a.png") no-repeat; width: 25px; height: 25px; text-align: center; color: rgb(255, 255, 255); line-height: 25px; overflow: hidden; font-size: 12px; font-weight: 700; float: left; display: inline-block;
}
.mainbanner_list li.active a {
	background-position: 0px -30px; text-decoration: none;
}
.mainbanner_list li a:hover {
	background-position: 0px -30px; text-decoration: none;
}