var loaded = false;

ie = (document.all)? true:false;

ns = (document.layers)? true:false;

ns6 = (document.getElementById)? true:false;
//ie5 compatible


function changeLdMode()
{

        loaded = true;

        
if(tid)
{ clearTimeout(tid);
}


}


if(document.images) 
{
var Icon1_x = new Image();
var Icon2_x = new Image();
var Icon3_x = new Image();
var Icon4_x = new Image();
var Icon5_x = new Image();
var Icon6_x = new Image();
var Icon7_x = new Image();
var Icon8_x = new Image();
var Icon9_x = new Image();
var Icon10_x = new Image();
var Icon11_x = new Image();
var Icon12_x = new Image();
var Icon13_x = new Image();
var Icon14_x = new Image();
var Icon15_x = new Image();
var Icon16_x = new Image();
var Icon1_o = new Image();
var Icon2_o = new Image();
var Icon3_o = new Image();
var Icon4_o = new Image();
var Icon5_o = new Image();
var Icon6_o = new Image();
var Icon7_o = new Image();
var Icon8_o = new Image();
var Icon9_o = new Image();
var Icon10_o = new Image();
var Icon11_o = new Image();
var Icon12_o = new Image();
var Icon13_o = new Image();
var Icon14_o = new Image();
var Icon15_o = new Image();
var Icon16_o = new Image();
Icon1_x.src = './nav_closed.gif';
Icon1_o.src = './nav_open.gif';
Icon2_x.src = './nav_closed.gif';
Icon2_o.src = './nav_open.gif';
Icon3_x.src = './nav_closed.gif';
Icon3_o.src = './nav_open.gif';
Icon4_x.src = './nav_closed.gif';
Icon4_o.src = './nav_open.gif';
Icon5_x.src = './nav_closed.gif';
Icon5_o.src = './nav_open.gif';
Icon6_x.src = './nav_closed.gif';
Icon6_o.src = './nav_open.gif';
Icon7_x.src = './nav_closed.gif';
Icon7_o.src = './nav_open.gif';
Icon8_x.src = './nav_closed.gif';
Icon8_o.src = './nav_open.gif';
Icon9_x.src = './nav_closed.gif';
Icon9_o.src = './nav_open.gif';
Icon10_x.src = './nav_closed.gif';
Icon10_o.src = './nav_open.gif';
Icon11_x.src = './nav_closed.gif';
Icon11_o.src = './nav_open.gif';
Icon12_x.src = './nav_closed.gif';
Icon12_o.src = './nav_open.gif';
Icon13_x.src = './nav_closed.gif';
Icon13_o.src = './nav_open.gif';
Icon14_x.src = './nav_closed.gif';
Icon14_o.src = './nav_open.gif';
Icon15_x.src = './nav_closed.gif';
Icon15_o.src = './nav_open.gif';
Icon16_x.src = './nav_closed.gif';
Icon16_o.src = './nav_open.gif';
}

function isChange(No) 
{

        imgNo='Icon' + No

        if(loaded) 
{

                document.images[imgNo].src = eval(imgNo + "_o.src");

        
     }


     }

function isReturn(No) 
{

        imgNo='Icon' + No

        if(loaded) 
{

                document.images[imgNo].src = eval(imgNo + "_x.src");

     }


     }
//Get obj

function getTargetObj(target)


{

        var targetObj;

        if(ie)

{

                targetObj = document.all[target].style;
        
     }

        else if(ns)

{

                targetObj = document.layers[target];

     }

        else if(ns6)

        
{

                targetObj = document.getElementById(target).style;

        
     }

        return (ie || ns || ns6)? targetObj:false;


     }


var tid

var selectedNo ='2'

var hideSwich = 'false'

function showMenu(No)
{

        if(loaded)
{

                
hideSwich = 'true'

                
hideMenu();

                
layerName ='menu' + No;

                
selectedNo = No;

                
var obj = getTargetObj(layerName);

                
if(ns) obj.visibility='show';

                
else if(ie || ns6) obj.visibility='visible';

                
isChange(No)

        
     }
 

     }

function hideMenu()
{

        
//selectedNoがshowMenuで設定されている。

        
layerName = 'menu' + selectedNo;

        
var obj = getTargetObj(layerName);

        
if(tid){ clearTimeout(tid);
     }

        
if (hideSwich == 'true')
{

                
if(ns) obj.visibility = "hide";

                
else if(ie || ns6) obj.visibility='hidden';

                
isReturn(selectedNo);

        
     }


     }

function menuCloseTimer(No)
{

        
if(loaded)
{

                
selectedNo = No;

                
hideSwich = 'true'

                
if(tid){ clearTimeout(tid);}

                
tid=setTimeout('hideMenu();',600);

        
    }


    }

function swichOFF()
{

        
hideSwich = 'false'


    }