日期:2014-05-16  浏览次数:20391 次

仿制下拉菜单问题
在网上看到一个下拉菜单的实例,我想仿制下拉菜单这个菜单,另外增加菜单项(菜单三和菜单四),其中菜单一和菜单二和原例子的菜单.但增加菜单三和菜单四都出现不同的问题!!弄了半天也弄不明白,请指教...(解决后马上结贴)

<%@   page   contentType= "text/html;   charset=gb2312 "   language= "java "   import= "java.sql.* "   errorPage= " "   %>
<!DOCTYPE   html   PUBLIC   "-//W3C//DTD   XHTML   1.0   Transitional//EN "   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<html   xmlns= "http://www.w3.org/1999/xhtml ">
<head>
<meta   http-equiv= "Content-Type "   content= "text/html;   charset=gb2312 "   />
<title> 下拉菜单 </title>
</head>

<body>
<SCRIPT   language=JavaScript>
function   MM_findObj(n,   d)   {   //v4.0
var   p,i,x;if(!d)   d=document;if((p=n.indexOf( "? "))> 0&&parent.frames.length){
d=parent.frames[n.substring(p+1)].document;   n=n.substring(0,p);}
if(!(x=d[n])&&d.all)   x=d.all[n];   for   (i=0;!x&&i <d.forms.length;i++)   x=d.forms[i][n];
for(i=0;!x&&d.layers&&i <d.layers.length;i++)   x=MM_findObj(n,d.layers[i].document);
if(!x   &&   document.getElementById)   x=document.getElementById(n);   return   x;}
function   MM_showHideLayers()   {   //v3.0
var   i,p,v,obj,args=MM_showHideLayers.arguments;
for   (i=0;   i <(args.length-2);   i+=3)   if   ((obj=MM_findObj(args[i]))!=null)   {   v=args[i+2];
if   (obj.style)   {   obj=obj.style;   v=(v== 'show ')? 'visible ':(v= 'hide ')? 'hidden ':v;   }
obj.visibility=v;   }}
//showhidelayer
function   mOvr(src,   cOvr)  
{if   (!src.contains(event.fromElement))   {src.style.cursor   =   "default ";src.bgColor   =   cOvr;}}
function   mOut(src,   cOut)  
{if   (!src.contains(event.toElement))   {src.style.cursor   =   "default ";src.bgColor   =   cOut;}}
//changetdcolor
</SCRIPT>
<table   width= "768 "   border= "1 "   align= "center ">
    <tr>
        <td>   <DIV   id=menu01   style= "POSITION:   absolute ">
                        <DIV   id=sub   onmouseout= "MM_showHideLayers( 'sub ', ' ', 'hide ') "  
                        onmouseover= "MM_showHideLayers( 'sub ', ' ', 'show ') "  
                        style= "HEIGHT:   30px;   LEFT:   -7px;   POSITION:   absolute;   TOP:   12px;   VISIBILITY:   hidden;   WIDTH:   90px;   Z-INDEX:   11 ">
<TABLE   border=0   cellPadding=4   cellSpacing=1   class=46C92F   width= "150 ">

                                        <TR   bgColor=#fafef4>
            &nbs