function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		global_Nav_01_over = newImage("images/global_Nav_01-over.gif");
		global_Nav_02_over = newImage("images/global_Nav_02-over.gif");
		global_Nav_03_over = newImage("images/global_Nav_03-over.gif");
		global_Nav_04_over = newImage("images/global_Nav_04-over.gif");
		global_Nav_05_over = newImage("images/global_Nav_05-over.gif");
		global_Nav_06_over = newImage("images/global_Nav_06-over.gif");
		global_Nav_07_over = newImage("images/global_Nav_07-over.gif");
		preloadFlag = true;
	}
}

var timerID


function showAboutNav(toggle, cssid, cssid2){

	if(toggle == "1"){
		document.getElementById(cssid).style.display="inline";
		document.getElementById(cssid2).style.display="none";
		
		timerID=clearTimeout(timerID);}
	if(toggle == "0") {
		document.getElementById(cssid).style.display="none";
		document.getElementById(cssid2).style.display="none";
	}
}


function keepAliveNav(pass, cssid, cssid2){

	if (pass== 1){//keep alive & clear timer
			document.getElementById(cssid).style.display="inline";
			timerID=clearTimeout(timerID);
		}
	if (pass==2){//start timer to close
var strtemp	
	strtemp = "showAboutNav(0,'"+cssid+"','"+ cssid2 +"')" 
		timerID=setTimeout(strtemp,1500);
	}
}

function hideMenu(cssid){ 
	if (document.getElementById(cssid).style.display="inline")
		{
		document.getElementById(cssid).style.display="none";
		}
	}