写一个隐藏函数和显示函数 
  bk.style.displany=""      //显示  bk.style.displany="none"  //隐藏

解决方案 »

  1.   

    ?<table onmouseout="this.style.display='none'">
    ......
    </table>hehe...
      

  2.   

    <table name=bk id=bk border=1 style="display:none" onmouseout="this.style.display='none'">
    <tr><td>asfsdf
    <tr><td>asfsdf
    <tr><td>asfsdf
    <tr><td>asfsdf
    </table>
    <input type=button onclick="bk.style.display='block'" value="显示表格">
      

  3.   

    <table name=bk id=bk border=1 style="display:none" onmouseout="this.style.display='none'" width=200 height=300><tr><td>
    <table>
    <tr><td>asfsdf
    <tr><td>asfsdf
    <tr><td>asfsdf
    <tr><td>asfsdf
    </table>
    </table>
    <input type=button onclick="bk.style.display='block'" value="显示表格">
      

  4.   

    <table onmouseover="this.style.display=''" onmouseout="this.style.display='none'" name=bk id=bk border=1 style="display:none" width=200 height=300><tr><td>
    <table>
    <tr><td>asfsdf
    <tr><td>asfsdf
    <tr><td>asfsdf
    <tr><td>asfsdf
    </table>
    </table>
    <input type=button onclick="bk.style.display='block'" value="显示表格">