动态侧拉菜单,二级.方便改为下拉菜单

function JsMenu(name)
...{
    this.Direction = 0;        //主菜单排列方向：0代表横向，1代表竖向
    this.MainWidth = 200;    //主菜单各项宽度
    this.MainHeight = 20;    //主菜单各项高度
    
    this.ItemWidth = null;
    this.ItemHeight = null;
    
    this.MainIcon = null;
    this.MainAlign = null;
    
    this.ItemIcon = null;
    this.ItemAlign = null;
    
    this.MainAnchor = null;
    this.ItemAnchor = null;
    
    this.Spacing = 0;
    this.Padding = 0;
    
    this.OutBgColor = '#FFFFFF';
    this.OverBgColor = '#EFEFEF';
    
    this.OutBorder = '1px solid #BBBBBB';
    this.OverBorder = '1px solid #999999';
    
    
    this.Name = 'JM';        //注：不用更改
    this.Icon = '·';        //注：不用更改
    var HasItems = false;
    var MenuItems = new Array();
    this.Add = function(Id,Parent,Text,Href,Target,Title)
    ...{
        HasItems = true;
        MenuItems[MenuItems.length] = new Array(Id,Parent,Text,Href,Target,Title);
    };
    
    this.Load = function()
    ...{
        if(name == null)
            this.Name += Math.random().toString().replace('.','0');
        else
            this.Name = this.Name + name;
        if(this.MainHeight != null) this.MainHeight = 'height="'+this.MainHeight+'"';
        if(this.ItemHeight != null) this.ItemHeight = 'height="'+this.ItemHeight+'"';
        if(this.MainAlign != null) this.MainAlign = 'align="'+this.MainAlign+'"';
        if(this.ItemAlign != null) this.ItemAlign = 'align="'+this.ItemAlign+'"';
        if(this.MainAnchor != null) this.MainAnchor = 'class="'+this.MainAnchor+'"';
        if(this.ItemAnchor != null) this.ItemAnchor = 'class="'+this.ItemAnchor+'"';
        if(this.MainIcon == null)
            this.MainIcon = this.Icon;
        else
            this.MainIcon = '<img border="0" src="'+this.MainIcon+'" align="absmiddle"/>';
        if(this.ItemIcon == null)
            this.ItemIcon = this.Icon;
        else
            this.ItemIcon = '<img border="0" src="'+this.ItemIcon+'" align="absmiddle"/>';
    };
    
    this.getMain = function(NO)
    ...{
        if(this.Direction == 1) document.write('<tr>');
        document.write('<td width="'+this.MainWidth+'" '+this.MainAlign+' '+this.MainHeight+' bgcolor="'+this.OutBgColor+'" style="border:'+this.OutBorder+';padding:'+this.Padding+';white-space:nowrap;" title="'+MenuItems[NO][5]+'"');
        document.write(' onmouseover="this.bgColor=''+this.OverBgColor+'';this.style.border=''+this.OverBorder+'';'+this.Name+'_'+MenuItems[NO][0]+'.style.display='inline';" onmouseout="this.bgColor=''+this.OutBgColor+'';this.style.border=''+this.OutBorder+'';'+this.Name+'_'+MenuItems[NO][0]+'.style.display='none';">');
        document.write('<div style="display:inline;'+(this.MainWidth-20)+'px;">&nbsp;'+this.MainIcon+' <a href="'+MenuItems[NO][3]+'" target="'+MenuItems[NO][4]+'" '+this.MainAnchor+'>'+MenuItems[NO][2]+'</a>&nbsp;</div>');
        document.write('<div id="'+this.Name+'_'+MenuItems[NO][0]+'_HI" align="right" style="display:none;20px;"><span style="font-family:Webdings">4</span></div>');
        if(this.Direction == 1)
        ...{
            document.write('<td width="0" align="left" valign="top" onmouseover="'+this.Name+'_'+MenuItems[NO][0]+'.style.display='inline';" onmouseout="'+this.Name+'_'+MenuItems[NO][0]+'.style.display='none';">');
            document.write('<div id="'+this.Name+'_'+MenuItems[NO][0]+'" style="position:absolute;display:none;">');
            document.write(this.getItems(MenuItems[NO][0]));
            document.write('</div>');
            document.write('</td>');
        }
        else
        ...{
            document.write('<br/>');
            document.write('<div id="'+this.Name+'_'+MenuItems[NO][0]+'" style="position:absolute;display:none;">');
            document.write(this.getItems(MenuItems[NO][0]));
            document.write('</div>');
        }
        document.write('</td>');
        if(this.Direction == 1) document.write('</tr>');
    };
    
    this.getItems = function(PID)
    ...{
        var HasItems = false;
        var ItemString = null;
        ItemString = '<table style="border-collapse:collapse;" border="0" cellpadding="0" cellspacing="0">';
        for(var i=1; i<MenuItems.length; i++)
        ...{
            if(MenuItems[i][1] == PID)
            ...{
                HasItems = true;
                ItemString += '<tr>';
                ItemString += '<td width="'+this.ItemWidth+'" '+this.ItemAlign+' '+this.ItemHeight+' bgcolor="'+this.OutBgColor+'" style="border:'+this.OutBorder+';padding:'+this.Padding+';white-space:nowrap;" title="'+MenuItems[i][5]+'"';
                ItemString += ' onmouseover="this.bgColor=''+this.OverBgColor+'';this.style.border=''+this.OverBorder+'';'+this.Name+'_'+MenuItems[i][0]+'.style.display='inline';" onmouseout="this.bgColor=''+this.OutBgColor+'';this.style.border=''+this.OutBorder+'';'+this.Name+'_'+MenuItems[i][0]+'.style.display='none';">';
                ItemString += '<div style="display:inline;'+(this.ItemWidth-20)+'px;">&nbsp;'+this.ItemIcon+' <a href="'+MenuItems[i][3]+'" target="'+MenuItems[i][4]+'" '+this.ItemAnchor+'>'+MenuItems[i][2]+'</a>&nbsp;</div>';
                ItemString += '<div id="'+this.Name+'_'+MenuItems[i][0]+'_HI" align="right" style="display:none;20px;"><span style="font-family:Webdings">4</span></div>';
                ItemString += '<td width="0" align="left" valign="top" onmouseover="'+this.Name+'_'+MenuItems[i][0]+'.style.display='inline';" onmouseout="'+this.Name+'_'+MenuItems[i][0]+'.style.display='none';">';
                ItemString += '<div id="'+this.Name+'_'+MenuItems[i][0]+'" style="position:absolute;display:none;">';
                ItemString += this.getItems(MenuItems[i][0]);
                ItemString += '</div>';
                ItemString += '</td>';
                ItemString += '</td>';
                ItemString += '</tr>';
                ItemString += '<tr>';
                ItemString += '<td bgcolor="#FFFFFF" style="line-height:'+this.Spacing+'px;">&nbsp;</td>';
                ItemString += '</tr>';
            }
        }
        ItemString += '</table>';
        if(HasItems)
        ...{
            ItemString += '<script language="javascript" type="text/javascript">';
            ItemString += 'document.getElementById("'+this.Name+'_'+PID+'_HI").style.display = "inline";';
            ItemString += '</script>';
            return ItemString;
        }
        else
            return '&nbsp;';
    };
    
    this.Show = function()
    ...{
        if(HasItems)
        ...{
            this.Load();
            document.write('<table style="border-collapse:collapse;" border="0" cellpadding="0" cellspacing="0">');
            this.getMain(0);
            for(var i=1; i<MenuItems.length; i++)
            ...{
                if(MenuItems[i][1] == 0)
                ...{
                    if(this.Direction == 1)
                    ...{
                        document.write('<tr>');
                        document.write('<td bgcolor="#FFFFFF" style="line-height:'+this.Spacing+'px;">&nbsp;</td>');
                        document.write('</tr>');
                    }
                    else
                    ...{
                        document.write('<td bgcolor="#FFFFFF" width="'+this.Spacing+'"><spacer/></td>');
                    }
                    this.getMain(i);
                }
            }
            document.write('</table>');
        }
    };
    
    this.toString = function()
    ...{
        return '[class JsMenu]';
    };
}

要用到的代码

JS文件.放在目录CSS下.其他地方的话请自己更改

源码:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<HTML><HEAD><TITLE></TITLE>
<META http-equiv=Content-Type content="text/html; charset=utf-8">
<META content="MSHTML 6.00.2900.2873" name=GENERATOR></HEAD>
<BODY leftMargin=0 topMargin=0>
<META http-equiv=Pragma content=no-cache><LINK 
href="css/common.css" type=text/css rel=STYLESHEET>
<!--#include file="inc/Conn.asp"-->

<div>侧拉菜单,同时可以改为下拉菜单</div>


<TABLE cellSpacing=0 cellPadding=0 width="100%" border=0 bgcolor="#FFFFFF">
        <TBODY>
        
        <TR>
          <TD align=middle>
            <DIV align=center>
            <SCRIPT language=JavaScript 
            src="css/JsMenu.js"></SCRIPT>

            <SCRIPT language=JavaScript>
        var JM = new JsMenu();
        JM.Direction = 1;    //主菜单排列方向：0代表横向，1代表竖向
        JM.MainWidth = 160;    //主菜单各项宽度
        JM.MainHeight = 28;    //主菜单各项高度
        
        JM.ItemWidth = null;    //子菜单宽度
        JM.ItemHeight = 28;    //子菜单高度
        
        JM.MainIcon = 'css/icon.gif';    //主菜单图标
        JM.MainAlign = 'left';    //主菜单对齐方式
        
        JM.ItemIcon =  'css/b01.gif';    //子菜单图标
        JM.ItemAlign = 'left';        //子菜单对齐方式
        
        JM.MainAnchor = null;        //主菜单链接样式
        JM.ItemAnchor = null;        //子菜单链接样式
        
        JM.Spacing = 1;                //菜单之间间隔
        JM.Padding = 4;                //菜单各项填充
        
        JM.OutBgColor = '';    //默认时的背景颜色
        JM.OverBgColor = '#D1DBE7';    //激活时的背景颜色
        
        JM.OutBorder = '0px solid #ffffff';        //默认时的边框样式
        JM.OverBorder = '1px solid #C0E0FF';    //激活时的边框样式
        
        //加载数据项(分类ID,所属父ID,分类名,链接地址,打开链接的方式,显示Title);
        i=0;
        m=0;
        n=0;
        var name="";
        var parName="";
        var temp="";
        var temp2=new Array(); 
        var temp3=new Array();
        var link="product.asp?bigclassname=";
        </SCRIPT>
<%set rsBigClass1=server.CreateObject("adodb.recordset")
rsBigClass1.open "Select * From BigClass",conn,1,1
do while not rsBigClass1.eof%>
        
            <SCRIPT language=JavaScript>        
               i++;
              name="level";
              name=name+i;
              var menuName=""; 
              var nameExhibit="<%=rsBigClass1("bigclassname")%>"; 
              
                        menuName="<%=rsBigClass1("bigclassname")%>"; 
                    
                JM.Add(name,'',menuName,link+"<%=rsBigClass1("bigclassname")%>",'_self',nameExhibit);
           </SCRIPT>
<!--子菜单-->
      
  <SCRIPT language=JavaScript>
                      var j=0;
                      parName=name;
                      temp=parName;
               </SCRIPT>
<%
      set rsSmallClass1=server.CreateObject("adodb.recordset")
      rsSmallClass1.open "Select * From SmallClass Where BigClassName='" & rsBigClass1("BigClassName") & "'",conn,1,1
      if not(rsSmallClass1.bof and rsSmallClass1.eof) then
        do while not rsSmallClass1.eof
    %>  
            <SCRIPT language=JavaScript>
                    j++;
                    name="level"+i+"_"+j;                   
                    </SCRIPT>

            <SCRIPT language=JavaScript>
               var subMenuName=""; 
               var nameExhibit="<%=rssmallclass1("smallclassname")%>"; 
            
                        subMenuName="<%=rssmallclass1("smallclassname")%>"; 
                    
            JM.Add(name,parName,subMenuName,link+"<%=rsBigClass1("bigclassname")%>&smallclassname=<%=rssmallclass1("smallclassname")%>",'_self',nameExhibit);
        </SCRIPT>

            <SCRIPT language=JavaScript>
                    parName=temp;
                   </SCRIPT>
<%
      rsSmallClass1.movenext
      loop
      end if
      rsSmallClass1.close
      set rsSmallClass1=nothing    %>
<!--子菜单完成-->

<%  rsBigClass1.movenext
    loop
    rsbigclass1.close
    set rsbigclass1=nothing%>

            <SCRIPT language=JavaScript>
        JM.Show();    //显示菜单
        </SCRIPT>
    </DIV></TD></TR></TBODY></TABLE>