/*全局属性1*/
body { text-align: left; padding:0; font-size:12px; color: #7f7c7c;line-height:150%;
margin: 0 auto; background:url(images/body_bg1.jpg) repeat; font: bold 12px;height:100%;}
.bg{width:858px;margin:0  auto  0 auto;text-align:center;position: relative; background:url(images/cont_bg1.jpg) repeat-y; }
/* 

 */
 /*全局属性2*/
 body { text-align: left; padding:0; font-size:12px; color: #7f7c7c;
line-height:150%;margin: 0 auto; background:url(images/body_bg.jpg) repeat; font: bold 12px;}
.bg{width:821px;margin:0  auto  0px auto;text-align:center; background:url(images/cont_bg.jpg) repeat-y; }