#outer {height: 100%; overflow: hidden; position: relative; width: 100%;}
#outer[id] {display: table; position: static;}

#middle {position: absolute; top: 50%; width: 100%; text-align: center;} /* for explorer only*/
#middle[id] {display: table-cell; vertical-align: middle; position: static;}

#inner {position: relative; top: -50%; text-align: left;} /* for explorer only */
#inner {width: 800px; margin-left: auto; margin-right: auto;} /* for all browsers*/