css /* pop_up */ .pop_wrap { overflow:visible; position:absolute; top:50%; left:50%; display:none; margin-left:-200px; z-index:999; } .pop_wrap .bg { background:#000; opacity:.5; filter:alpha(opacity=50); width:100%; height:100%; position:fixed; left: 0;top:0; } .ly_pop { position:relative; z-index:10; padding:20px; border:2px solid #777; background:#fff; text-align:center; font-weight:700;} .ly..