var isIE = navigator.userAgent.search("MSIE") > -1;   

var isIE6 = navigator.userAgent.search("MSIE 6") > -1;  


var isIE7 = navigator.userAgent.search("MSIE 7") > -1;   

var isFirefox = navigator.userAgent.search("Firefox") > -1;   

var isOpera = navigator.userAgent.search("Opera") > -1;   

var isSafari = navigator.userAgent.search("Safari") > -1;//Google瀏覽器是用這核心   



//detail 
function menuDout(obj)
{
     
    obj.parentNode.className="";
}

function menuDover(obj)
{
    obj.parentNode.className="visitedD";
}


//show detail menu
function showDetail(strID)
{    
   
    document.getElementById("menuM"+strID).className="main visited";

    if (!isIE)    
    {
        
        //document.getElementById("menuD"+strID).style.marginLeft="100px"
        if (document.getElementById("menuD"+strID).children.length<=1)
        return;
    }
    else
    {
        
        if (document.getElementById("menuD"+strID).children.length<=0)
            return;

        if (isIE6) {
            
            document.getElementById("Frame" + strID).style.display = "";
            document.getElementById("Frame" + strID).style.height = (document.getElementById("menuD" + strID).children.length * 20);//+2;
        }
        
    }

    
    document.getElementById("menuD"+strID).style.display="";
    
}



function hideDetail(strID)
{            
    document.getElementById("menuM"+strID).className="main";
    
    if (!isIE)    
    {
        if (document.getElementById("menuD"+strID).children.length<=1)
        return;
    }
    else {       
        
        if (document.getElementById("menuD"+strID).children.length<=0)
            return;

        document.getElementById("Frame" + strID).style.display = "none";  
    }
    
    
    document.getElementById("menuD"+strID).style.display="none";
}