body { margin:0px; background-color:#fff; height:100% }
html { height:100% }
#PageDiv { position:relative; width:1250px; min-height:100%; margin:auto }
#item4 { position:absolute; left:0px; top:0px; width:1280px; height:141px; z-index:1 }
#item7a { position:absolute; left:247px; top:9px; width:742px; height:138px; z-index:2; padding:12px }
#item1 { position:absolute; left:1316px; top:464px; width:1005px; height:530px; z-index:3 }