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 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();

Icon1_x.src = 'images/hed-01-01.gif';
Icon1_o.src = 'images/hed_on-01-01.gif';
Icon2_x.src = 'images/hed-01-02.gif';
Icon2_o.src = 'images/hed_on-01-02.gif';
Icon3_x.src = 'images/hed-01-03.gif';
Icon3_o.src = 'images/hed_on-01-03.gif';
Icon4_x.src = 'images/hed-01-04.gif';
Icon4_o.src = 'images/hed_on-01-04.gif';
Icon5_x.src = 'images/hed-01-05.gif';
Icon5_o.src = 'images/hed_on-01-05.gif';
Icon6_x.src = 'images/hed-01-06.gif';
Icon6_o.src = 'images/hed_on-01-06.gif';
Icon7_x.src = 'images/hed-01-07.gif';
Icon7_o.src = 'images/hed_on-01-07.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 =('1')
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'
	}