div.ithumb {cursor:pointer; width:150px; float:left; margin:0 12px 12px 0; font-size:12px; line-height:14px; text-align:center;}

div.instpop {width:522px; position:relative;}
div.lefter {width:36px; height:450px; float:left;}
div.arrow {margin-top:200px; font-size:36px; line-height:39px; text-align:center; cursor:pointer;}
div.imga {position:absolute; top:0px; left:36px; z-index:100; background-color: transparent;}
div.imgb {position:absolute; top:0px; left:36px; z-index:101; background-color: transparent;}
.iimg {width:450px; height:450px;}
div.righter {width:36px; height:450px; float:right;}
#capter {clear:both; padding-top:18px; font-size:12px; line-height:16px; text-align:center;}