.t_mid
{
	 width:737px;
	  height:400px; 
	 background: url(../images/index/index_2_about_bg.gif);
	 background-repeat:no-repeat;
	 text-align:center;
}
#two_table
{
	 background: url(../images/index/index_2_xzjg.gif);
}
#th_table
{
	width:100%;
	 margin-top:110px;
	 height:140px;
}
.td_d
{
	width:45px;
}
.td_s
{
	width:20px;
}