var LastLeftID = ""; 

function menuFix() { 
    var obj = document.getElementById("nav").getElementsByTagName("li"); 
     
    for (var i=0; i<obj.length; i++) { 
        obj[i].onmouseover=function() { 
            this.className+=(this.className.length>0? " ": "") + "sfhover"; 
        } 
        obj[i].onMouseDown=function() { 
            this.className+=(this.className.length>0? " ": "") + "sfhover"; 
        } 
        obj[i].onMouseUp=function() { 
            this.className+=(this.className.length>0? " ": "") + "sfhover"; 
        } 
        obj[i].onmouseout=function() { 
            this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"), ""); 
        } 
    } 
} 

function DoMenu(emid) 
{ 
    var obj = document.getElementById(emid);     
    obj.className = (obj.className.toLowerCase() == "expanded"?"collapsed":"expanded"); 
    if((LastLeftID!="")&&(emid!=LastLeftID))    //关闭上一个Menu 
    { 
        document.getElementById(LastLeftID).className = "collapsed"; 
    } 
    LastLeftID = emid; 
} 

function GetMenuID() 
{ 

    var MenuID=""; 
    var _paramStr = new String(window.location.href); 

    var _sharpPos = _paramStr.indexOf("#"); 
     
    if (_sharpPos >= 0 && _sharpPos < _paramStr.length - 1) 
    { 
        _paramStr = _paramStr.substring(_sharpPos + 1, _paramStr.length); 
    } 
    else 
    { 
        _paramStr = ""; 
    } 
     
    if (_paramStr.length > 0) 
    { 
        var _paramArr = _paramStr.split("&"); 
        if (_paramArr.length>0) 
        { 
            var _paramKeyVal = _paramArr[0].split("="); 
            if (_paramKeyVal.length>0) 
            { 
                MenuID = _paramKeyVal[1]; 
            } 
        } 
        /* 
        if (_paramArr.length>0) 
        { 
            var _arr = new Array(_paramArr.length); 
        } 
         
        //取所有#后面的，菜单只需用到Menu 
        //for (var i = 0; i < _paramArr.length; i++) 
        { 
            var _paramKeyVal = _paramArr[i].split('='); 
             
            if (_paramKeyVal.length>0) 
            { 
                _arr[_paramKeyVal[0]] = _paramKeyVal[1]; 
            }         
        } 
        */ 
    } 
     
    if(MenuID!="") 
    { 
        DoMenu(MenuID) 
    } 
} 

GetMenuID();    //*这两个function的顺序要注意一下，不然在Firefox里GetMenuID()不起效果 
menuFix(); 