答案：点击链接，显示提示框，提示框里也有链接可点击. 鼠标移开链接或者移开提示框，提示框就隐藏。 下面这个我写的不能自适应，如果菜单左对齐，显示层能否自动在右边显示？应该怎样调整JS？ <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>test</title> </head> <style> body {background-color: #fff; font-size:14px; color:#666;} #link-url a {display:block; height:30px; line-height:30px;width:100px; color:#666; text-decoration:none;cursor:pointer;} #link-url a:hover {background:#ccc;} #d-k{position:relative; margin:0px 0px 0px 0px;z-index:0;} #Layer1,#Layer2,#Layer3,#Layer4,#Layer5{position:absolute; left: 70px; top: 0px;right:70px;} #show-k{margin:0px 0px 0px 0px;position:relative;background-color:#000; border:#ccc 1px solid; height:100px;z-index:3;filter:alpha(opacity=70);opacity:0.7; width:500px;} </style> <script language="javascript"> function change(x) {document.getElementById(x).style.display ="none";} function onClickbox(y){document.getElementById(y).style.display ="";} function onMouseOutbox(z){document.getElementById(z).style.display ="none";} function onMouseOverbox(a){document.getElementById(a).style.display ="";} </script> <body> <div id="link-url" > <table width="400" cellspacing="5"> <tr> <td> <div id="d-k"> 我点击一 <div id="Layer1" style="display:none;" onMouseOver="onMouseOverbox('Layer1')" onMouseOut="onMouseOutbox('Layer1')"> <div id="show-k"> <table width="100%" border="0" cellpadding="0" cellspacing="0"> <tr> <td>1sty人的和lesdf人的和人的和11</td> <td>人的和人的和人的和人的和人的和</td> <td>33人的和人的和人的和人的和3</td> <td>44人的和人的和人的和人的和人的和人的和人的和人的和4</td> </tr> </table> </div> </div> </div> </td> </tr> <tr> <td> <div id="d-k"> 我点击一 <div id="Layer2" style="display:none;" onMouseOver="onMouseOverbox('Layer2')" onMouseOut="onMouseOutbox('Layer2')"> <div id="show-k"> <table width="100%" border="0" cellpadding="0" cellspacing="0"> <tr> <td>111</td> <td>222</td> <td>333</td> <td>444</td> </tr> </table> </div> </div> </div> </td> </tr> <tr> <td> <div id="d-k"> 我点击一 <div id="Layer3" style="display:none;" onMouseOver="onMouseOverbox('Layer3')" onMouseOut="onMouseOutbox('Layer3')"> <div id="show-k"> <table width="100%" border="0" cellpadding="0" cellspacing="0"> <tr> <td>111</td> <td>222</td> <td>333</td> <td>444</td> </tr> </table> </div> </div> </div> </td> </tr> <tr> <td> <div id="d-k"> 我点击一 <div id="Layer4" style="display:none;" onMouseOver="onMouseOverbox('Layer4')" onMouseOut="onMouseOutbox('Layer4')"> <div id="show-k"> <table width="100%" border="0" cellpadding="0" cellspacing="0"> <tr> <td>111</td> <td>222</td> <td>333</td> <td>444</td> </tr> </table> </div> </div> </div> </td> </tr> <tr> <td> <div id="d-k"> 我点击一 <div id="Layer5" style="display:none;" onMouseOver="onMouseOverbox('Layer5')" onMouseOut="onMouseOutbox('Layer5')"> <div id="show-k"> <table width="100%" border="0" cellpadding="0" cellspacing="0"> <tr> <td>111</td> <td>222</td> <td>333</td> <td>444</td> </tr> </table> </div> </div> </div> </td> </tr> </table> </div> </div> </body> </html> [Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]左对齐效果 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>test</title> </head> <style> body {background-color: #fff; font-size:14px; color:#666;} #link-url a {display:block; height:30px; line-height:30px;width:100px; color:#666; text-decoration:none;cursor:pointer;} #link-url a:hover {background:#ccc;} #d-k{position:relative; margin:0px 0px 0px 0px;z-index:0;} #Layer1,#Layer2,#Layer3,#Layer4,#Layer5{position:absolute; left: 70px; top: 0px;right:70px;} #show-k{margin:0px 0px 0px 0px;position:relative;background-color:#000; border:#ccc 1px solid; height:100px;z-index:3;filter:alpha(opacity=70);opacity:0.7; width:500px;} </style> <script language="javascript"> function change(x) {document.getElementById(x).style.display ="none";} function onClickbox(y){document.getElementById(y).style.display ="";} function onMouseOutbox(z){document.getElementById(z).style.display ="none";} function onMouseOverbox(a){document.getElementById(a).style.display ="";} </script> <body> <div id="link-url" > <table width="400" align="right" cellspacing="5"> <tr> <td> <div id="d-k"> 我点击一 <div id="Layer1" style="display:none;" onMouseOver="onMouseOverbox('Layer1')" onMouseOut="onMouseOutbox('Layer1')"> <div id="show-k"> <table width="100%" border="0" cellpadding="0" cellspacing="0"> <tr> <td>1sty人的和lesdf人的和人的和11</td> <td>人的和人的和人的和人的和人的和</td> <td>33人的和人的和人的和人的和3</td> <td>44人的和人的和人的和人的和人的和人的和人的和人的和4</td> </tr> </table> </div> </div> </div> </td> </tr> <tr> <td> <div id="d-k"> 我点击一 <div id="Layer2" style="display:none;" onMouseOver="onMouseOverbox('Layer2')" onMouseOut="onMouseOutbox('Layer2')"> <div id="show-k"> <table width="100%" border="0" cellpadding="0" cellspacing="0"> <tr> <td>111</td> <td>222</td> <td>333</td> <td>444</td> </tr> </table> 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