/** layout **/
.wrapper { width:100%; height:100%; background:url(bg-qq.jpg) repeat-x center top; }
.header1, .content { width:750px; margin:0 auto; overflow:hidden; }
/** header **/
.header1 { height:607px; position:relative; background:url(header.jpg) no-repeat center; }
.hide { display:none; }
.btnbox { position:absolute; left:409px; top:375px; }
.btnbox a { width:280px; height:59px; display:block; background:url(btns.png) no-repeat; text-indent:-9999px; overflow:hidden; margin-top:15px; }
.btnbox a.dl_64 { background-position:0px 0px; }
.btnbox a.dl_64:hover { background-position:0px -70px; }
.btnbox a.dl_64:active { background-position:0px -140px; }
.btnbox a.dl_32 { background-position:-230px 0px; }
.btnbox a.dl_32:hover { background-position:-230px -70px; }
.btnbox a.dl_32:active { background-position:-230px -140px; }