body {margin:0;}
.wrap {margin:0 auto; text-align:center; height:100%; width:100%; position:absolute; overflow:hidden;}
.upgrade_wrap {background:url(bg.gif); height:100%; width:100%;}
.top img {float:right; margin:-10px -10px 0 0;}
.top {background:url(corner.png) no-repeat -10px -10px; display:block; height:10px;}
.btm img {float:right; margin: 0 -10px -10px 0;}
.btm {background:url(corner.png) no-repeat -10px 0px; display:block; height:10px; width:100%; position:fixed; bottom:0px; *left:0;}
.main {background:url(Main_img.png) no-repeat center bottom; height:80%; width:100%; display:block; margin:0 auto;}
.upgrade_wrap .main img {display:block; margin:0 auto; margin-top:10%;}