html body {
	font-size:14px;
	font-family:Tahoma, "MS Sans Serif";
	line-height:100%;
	min-width: 1000px;
	color:#525253;
	background:#dbe3fb;
	background:#f6f6f6;
	margin-top:40px;
}
a{
	outline: none;
	text-decoration:none;
}
.clear{
	clear:both;
}
.center_screen{
  width:1100px;
  margin:0 auto;
}

.center_screen2{
  width:1100px;
  margin:0 auto;
}


#navigation_bar{
  background:#4b4b4b;
  height:40px;
  line-height:40px;
  color:#c1c1c9;
  position:fixed;
  top:0; left:0; right:0;
}
#navigation_bar a{
  display:inline-block;
  color:#c1c1c9;
  margin-right:30px;
  font-weight:bold;
}
#navigation_bar #content_option{
  display:inline-block;
  font-weight:bold;
} 
#navigation_bar #content_option select{
  font-size:14px;
  border:1px solid #cccccc;
  height:20px;
  margin-left:5px;
  margin-right:20px;
  min-width:300px;
}



#header{
  background:#e0e0e0;
}

#banner{
  width:990px;
  display:block;
  margin-bottom:30px;
}

#footer{
  margin-top:40px;
  margin-bottom:20px;
  line-height:140%;
  color:#6f6f6f;
}


#content{
  margin-top:40px;
  background:#fff;
  border:1px solid #d8d8d8;
  border-top-left-radius:8px;
  border-top-right-radius:8px;
}
#content_header{
  background:#eeeeee;
  background:#4b4b4b;
  border-bottom:1px solid #d8d8d8;
  font-weight:bold;
  color:#666666;
  color:#e0e0e0;
  font-size:15px;
  font-weight:bold;
  padding:12px 40px;
  border-top-left-radius:8px;
  border-top-right-radius:8px;
}



#homepage_bg{
  position:relative;
  width:990px;
  height:470px;
  margin-top:60px;
}
#homepage_bg a{
  display:block;
  position:absolute;
  width:247px;
  height:156px;
  background-color:#cccccc;
  background-image: url('../images/banner1.jpg');
  background-repeat: no-repeat;
}
#homepage_bg a:hover{
  background-image: url('../images/banner2.jpg'); 
}
#homepage_bg_1{
  top:0px;  left:0px;
  background-position: 0px 0px; 
}
#homepage_bg_2{
  top:0px;  left:247px;
  background-position: -247px 0px; 
}
#homepage_bg_3{
  top:0px;  left:494px;
  background-position: -494px 0px; 
}
#homepage_bg_4{
  top:0px;  left:741px;
  background-position: -741px 0px; 
}
#homepage_bg_5{
  top:156px;  left:0px;
  background-position: 0px -156px; 
}
#homepage_bg_6{
  top:156px;  left:247px;
  background-position: -247px -156px; 
}
#homepage_bg_7{
  top:156px;  left:494px;
  background-position: -494px -156px; 
}
#homepage_bg_8{
  top:156px;  left:741px;
  background-position: -741px -156px; 
}
#homepage_bg_9{
  top:312px;  left:0px;
  background-position: 0px -312px; 
}
#homepage_bg_10{
  top:312px;  left:247px;
  background-position: -247px -312px; 
}
a#homepage_bg_11{
  top:312px;  left:492px;
  background-position: -492px -312px; 
  width:164px;
}
a#homepage_bg_12{
  top:312px;  left:656px;
  background-position: -656px -312px; 
  width:166px;
}
a#homepage_bg_13{
  top:312px;  left:822px;
  background-position: -822px -312px; 
  width:166px;
}