真心求教如何用javascript做集合菜单,做出的效果就和左边的一样---一个“+”号,点一下后就展开很多的子菜单,有源代码的更好!
真心求教如何用javascript做集合菜单,做出的效果就和左边的一样---一个“+”号,点一下后就展开很多的子菜单,有源代码的更好!
------解决方案--------------------http://www.leftworld.net/javascript/20020531menu2.htm 
 可以下来试试!
------解决方案--------------------看: 
  <!DOCTYPE HTML PUBLIC  "-//W3C//DTD HTML 4.0 Transitional//EN ">  
  <html>  
  <head>  
  <title>  New Document  </title>  
  <meta name= "Generator " content= "EditPlus ">  
  <meta name= "Author " content= " ">  
  <meta name= "Keywords " content= " ">  
  <meta name= "Description " content= " ">  
  </head>    
  <body>  
  <script language=JavaScript1.2>  
  <!-- 
 function showsubmenu(sid) { 
 	var whichEl = eval( "submenu " + sid); 
 	var switchFolder = eval( "switchFolder " + sid); 
 	var plusMinus = eval( "plusMinus " + sid); 
 	if (whichEl.style.display ==  "none "){ 
 		eval( "submenu " + sid +  ".style.display=\ "\ "; "); 
 		if (sid == 2) { 
 			plusMinus.src= "images/icon/ftv2mlastnode.gif "; 
 		}else{ 
 			plusMinus.src= "images/icon/ftv2mnode.gif "; 
 			switchFolder.src= "images/icon/ftv2folderopen.gif "; 
 		} 
 	}else{ 
 		eval( "submenu " + sid +  ".style.display=\ "none\ "; "); 
 		if (sid == 2) { 
 			plusMinus.src= "images/icon/ftv2plastnode.gif "; 
 		}else{ 
 			plusMinus.src= "images/icon/ftv2pnode.gif "; 
 			switchFolder.src= "images/icon/ftv2folderclosed.gif "; 
 		} 
 	} 
 } 
 //-->  
  </script>  
  <table width= "778 " border= "0 " align= "center " height= "100 " cellspacing= "0 " cellpadding= "0 " class= "tableborder ">  
    <tr valign= "top ">  
      <td width= "15% " id= "frame " name= "frame " class= "UserLeft ">  
  <!--树型菜单开始-->  
  <table width= "150 " border= "0 " align= "center " cellpadding= "0 " cellspacing= "0 ">  
    <tr>  
      <td height= "5 ">  </td>  
    </tr>  
    <tr>  
      <td height= "16 ">  <img src= "images/icon/user_manager.gif " width= "22 " height= "16 " align= "absmiddle " />  <strong>  <a href= "main.asp " target= "main "> 用户控制面板 </a>  </strong>  </td>  
    </tr>  
  </table>  
  <table width= "150 " border= "0 " align= "center " cellpadding= "0 " cellspacing= "0 ">  
    <tr>  
      <td onclick= "showsubmenu(0) ">  <img id=plusMinus0 src= "images/icon/ftv2mnode.gif " width= "16 " height= "22 " align= "absmiddle " />  <img id= "switchFolder0 " src= "images/icon/ftv2folderopen.gif " width= "24 " height= "16 " align= "texttop " /> 服务中心 </td>  
    </tr>  
    <tr>  
      <td style= "display: " id= "submenu0 ">  <table width= "100% " border= "0 " cellspacing= "0 " cellpadding= "0 ">  
        <tr>  
          <td>  <img src= "images/icon/ftv2vertline.gif &