jsアニメーションエフェクトを開くレイヤーを閉じるレイヤー_javascriptスキル

<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>DOM_text01</title> <style type="text/css"> body,span,div,td{font-size:12px;line-height:1.5em;color:#849BCA;} #bodyL{ float:left; width:84px; margin-right:2px; } a.od{ width:80px; height:25px; line-height:25px; text-align:center; font-weight:bold; border: 2px solid #849BCA; display:block; color:#547BC9; float:left; text-decoration:none; margin-top:2px; } a.od:link{ background:#EEF1F8; } a.od:visited{ background:#EEF1F8; } a.od:hover{ background:#EEE; } a.od:active{ background:#EEE; } #fd{ width:500px; height:200px; background:#EDF1F8; border: 2px solid #849BCA; margin-top:2px; margin-left:2px; float:left; overflow:hidden; position:absolute; left:0px; top:0px; cursor:move; float:left; /*filter:alpha(opacity=50);*/ } .content{ padding:10px; } </style> <div id="bodyL"> <a href="#" class="od" onclick="show('fd');return false;"> [</a> </div>