var timeout         = 0;//500;
var closetimer		= 0;
var ddmenuitem      = 0;

// open hidden layer
function mopen(id,linkNm,imgNm)
{	
  
	// cancel close timer
	mcancelclosetime();

	// close old layer
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	

		// get new layer and show it
		ddmenuitem = document.getElementById(id);
		if(id=="m2" || id=="m6" || id=="m3"){
			ddmenuitem.style.visibility = 'visible';
		}

		//if(id=="m1"){
			document.getElementById("menuTd").className="MainTabBlue1";
		//}else{
			//document.getElementById("menuTd").className="MainTabBlue1";
		//}
	document.getElementById(linkNm).src="images/"+imgNm;

}
// close showed layer
function mclose()
{
	// if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	if(ddmenuitem){		
		//	
		if(ddmenuitem.id=="m2"){
			//mclosetime('aboutUslink','blue_aboutus.gif');
			mclosesubmenudiv('m2-L4','marketingMateriallink','blueF_marketmaterial.gif');
		}
		ddmenuitem.style.visibility = 'hidden';
	}
}

// go close timer
function mclosetime(linkNm,imgNm)
{  // alert("linkNm="+linkNm);
	
	document.getElementById("menuTd").className="MainTabBlue1";
	
	closetimer = window.setTimeout(mclose, timeout);
    document.getElementById(linkNm).src="images/"+imgNm;

	if(ddmenuitem.id=="m2"){
		showThis('marketingMateriallink','grayF_marketmaterial.gif');
	}
}

// cancel close timer
function mcancelclosetime(linkNm,imgNm)
{	//alert("=="+document.getElementById(linkNm));
	//document.getElementById(linkNm).src="images/"+imgNm;
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}

function showThis(linkNm,imgNm){
	//alert("=="+document.getElementById(linkNm));
	document.getElementById(linkNm).src="images/"+imgNm;
}
// close layer when click-out
document.onclick = mclose; 
// -->

function mopensubmenudiv(id,linkNm,imgNm){
	if(document.getElementById(id)){
		//alert("open obj="+document.getElementById(id));
		document.getElementById(id).style.visibility = 'visible';
		//mopen('m2','aboutUslink','grayF_aboutus.gif')
		document.getElementById("m2").style.visibility = 'visible';
		document.getElementById("aboutUslink").src="images/grayF_aboutus.gif";
	}
	
}

function mclosesubmenudiv(id,linkNm,imgNm){
	if(document.getElementById(id)){
		//alert("close obj="+document.getElementById(id));
		document.getElementById(id).style.visibility = 'hidden';
		//mclosetime('aboutUslink','blue_aboutus.gif')
		document.getElementById("m2").style.visibility = 'visible';
		//document.getElementById("aboutUslink").src="images/blue_aboutus.gif";
		//mclosetime('aboutUslink','blue_aboutus.gif');
	}
}