菜单的显示和隐藏

       

点击大分类，显示小分类，其他大分类的小分类会隐藏，感觉这个实现的还不错，总结下来，以后使用...

代码：

 <script language="javascript">
function show(obj,maxg,obj2){
  if(obj.style.pixelHeight<maxg){
    obj.style.pixelHeight+=maxg/10;
    obj.filters.alpha.opacity+=20;
    obj2.background="images/title_hide.gif";
    if(obj.style.pixelHeight==maxg/10)
      obj.style.display='block';
    myObj=obj;
    mymaxg=maxg;
    myObj2=obj2;
    setTimeout('show(myObj,mymaxg,myObj2)','5');
  }
}
function hide(obj,maxg,obj2){
  if(obj.style.pixelHeight>0){
    if(obj.style.pixelHeight==maxg/5)
      obj.style.display='none';
    obj.style.pixelHeight-=maxg/5;
    obj.filters.alpha.opacity-=10;
    obj2.background="images/title_show.gif";
    myObj=obj;
    mymaxg=maxg
    myObj2=obj2;
    setTimeout('hide(myObj,mymaxg,myObj2)','5');
  }
  else if(whichContinue) whichContinue.click();
}
function chang(obj,maxg,obj2){
  if(obj.style.pixelHeight){
    hide(obj,maxg,obj2);
    nopen='';
    whichcontinue='';
  }else if(nopen){
      whichContinue=obj2;
      nopen.click();
    }else{
      show(obj,maxg,obj2);
      nopen=obj2;
      whichContinue='';
    }
}
</script>

页面代码：

<table cellSpacing="0" cellPadding="0" align="left" border="0" bgcolor="#ffffff" style=" 25%"> 
  <tr>
    <td vAlign=top style="text-align: center;  181px;">
     
      <table cellSpacing="0" cellPadding="0" width=222 align=center>
        
        <tr style="CURSOR: hand">
            <td width="193" 
            height=25 align="center" 
          background="images/title_show.gif" class=list_title id=list1 
          onclick=chang(menu1,80,list1); 
          onmouseover="this.typename='list_title2';" 
          onmouseout="this.typename='list_title';"><span style="color: #ffffff">套打邮寄产品单</span> </td>
        </tr>
        <tr>
            <td align="center" valign="middle" > 
              <div class=sec_menu id=menu1 
            style="DISPLAY: none; FILTER: alpha(Opacity=0);  158px; height: 0px">
                <table  cellSpacing="0" 
            cellPadding="0" width=152 align="center"  background="images/bg1.gif" style="padding-left:5px; height: 60px;">
                  
                    <tr> 
                      <td style=" 152px; height: 25px"><a href="printhk.aspx" target="BoardList">打印汇款单</a></td>
                    </tr>
                    <tr> 
                      <td style=" 152px; height: 25px"><a href="kuaidi.aspx" target="BoardList">打印快递单</a></td>
                    </tr>
                      <tr> 
                      <td height=25 style=" 152px; height: 25px"><a href="envelop.aspx" target="BoardList">打印信封</a></td>
                    </tr>
                  
                </table>
      </div></td></tr></table>


<table cellSpacing="0" cellPadding="0" width=222 align=center>
        
        <tr style="CURSOR: hand">
            <td width="183" 
            height=25 align="center" 
          background="images/title_show.gif" class=list_title id=list2 
          onclick=chang(menu2,150,list2); 
          onmouseover="this.typename='list_title2';" 
          onmouseout="this.typename='list_title';"><span style="color: #ffffff">web打印</span> </td>
      </tr>
        <tr>
            <td align="center"> 
              <div class=sec_menu id=menu2 
            style="DISPLAY: none; FILTER: alpha(Opacity=0);  158px; height: 0px">
                <table  cellSpacing=2 
            cellPadding="0" width=152 align="center"  background="images/bg.gif" style="padding-left:5px">
                  <tr> 
                      <td style="height: 25px"><a href="printIE.aspx" target="BoardList">调用IE自身的打印功能</a></td>
                  </tr>
                  <tr> 
                    <td height=25><a href="printContent.aspx" target="BoardList">打印指定框架中的内容</a></td>
                  </tr>
                  <tr> 
                      <td height=25><a href="webBrowser.aspx" target="BoardList">利用WebBrowser进行打印</a></td>
                  </tr>
                    <tr> 
                      <td height=25><a href="PageSetUp.aspx" target="BoardList">设置页眉页脚</a></td>
                    </tr>
                      <tr> 
                      <td height=25><a href="Css.aspx" target="BoardList">利用CSS样式分页打印</a></td>
                    </tr>
                    
                    
        
                  
                </table>
      </div></td></tr></table>
              
              
       <table cellSpacing="0" cellPadding="0" width=222 align=center>
         
           <tr style="CURSOR: hand">
             <td width="184" 
            height=25 align="center" 
          background="images/title_show.gif" class=list_title id=list10 
          onclick=chang(menu10,100,list10); 
          onmouseover="this.typename='list_title2';" 
          onmouseout="this.typename='list_title';"><span style="color: #ffffff">打印图片</span> </td>
           </tr>
           <tr>
             <td valign="middle">
               <div class=sec_menu id=menu10 
            style="DISPLAY: none; FILTER: alpha(Opacity=0);  158px; height: 0px">
                 <table width=152 align=center 
            cellPadding="0"  cellSpacing=2  background="images/bg.gif" style="padding-left:5px">
                   
                     <tr>
                       <td height=30><a href="PrintTuPian.aspx" target="BoardList">打印自定义大小的图片</a></td>
                     </tr>
                     <tr>
                       <td height=30><a href="Print.aspx" target="BoardList">图片放大缩小并且打印</a></td>
                     </tr>
               
                     <tr>
                       <td height=25><a href="resume.aspx" target="BoardList">打印简历</a></td>
                     </tr>
                 </table>
             </div></td>
           </tr>
      </table>
<table cellSpacing="0" cellPadding="0" width=222 align=center>
         
           <tr style="CURSOR: hand">
             <td width="201" 
            height=25 align="center" 
          background="images/title_show.gif" class=list_title id=list4 
          onclick=chang(menu4,80,list4); 
          onmouseover="this.typename='list_title2';" 
          onmouseout="this.typename='list_title';"><span style="color: #ffffff">调用office进行打印</span> </td>
           </tr>
           <tr>
             <td valign="middle">
               <div class=sec_menu id=menu4 
            style="DISPLAY: none; FILTER: alpha(Opacity=0);  158px; height: 0px">
                 <table  cellSpacing=2 
            cellPadding="0" width=152 align="center" background="images/bg.gif" style="padding-left:5px">
                   
     
                     <tr>
                       <td height=25><a href="printWord.aspx" target="BoardList">将数据导出到word中并且打印</a></td>
                     </tr>
                     <tr> 
                      <td height=25><a href="ExcelPrint.aspx" target="BoardList">使用Excel打印报表</a></td>
                    </tr>
                      
                 </table>
             </div></td>
           </tr>
     </table>
      <script language="javascript">
  var nopen="";
  var whichContinue="";
      </script>