.left_banner {
	background-image: url(cssimgleft_banner_bg.jpg);
}

.xu_banner {
	background-image: url(cssimgbanner_bg.jpg);
}

.right_banner {
	background-image: url(cssimgright_banner_bg.jpg);
}

.nav td a {
	display: inline-block;
	width: 100%;
	height: 100%;
	line-height: 30px;
}

.nav td:hover {
	background-image: url(imagestop-bg.png);
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center left;
}

.foot_gray_div {
	background-image: url(cssimgdi_bg.jpg);
}

.foot_dot_div {
	background-image: url(cssimgbody_bg.jpg);
}

.et_logo {
	display: inline-block;
	width: 20px;
	height: 16px;
	background-image: url(imageszc.jpg);
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center top;
}


.ifr_toDir {
	height: 500px;
}


.ifr_pubLet {
	width: 779px;
}

.ifr_mailDetail {
	width: 980px;
	margin:  0 auto;
}