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) {
		shh09_01_over = newImage("images/shh09_01-over.gif");
		shh09_02_over = newImage("images/shh09_02-over.gif");
		shh09_03_over = newImage("images/shh09_03-over.gif");
		shh09_04_over = newImage("images/shh09_04-over.gif");
		shh09_05_over = newImage("images/shh09_05-over.gif");
		preloadFlag = true;
	}
}

function openWindow(strpath, https) {
	if (https == "true") {
		window.open("https://www.shiphazmat.net/" + strpath,"shn_window","width=955,height=600,left=0,top=0,toolbar=no,location=no,status=no,scrollbars=yes,resizable=yes,directories=no,copyhistory=no");
		//window.open(strpath,"shn_window","width=955,height=600,left=0,top=0,toolbar=no,location=yes,status=yes,scrollbars=yes,resizable=yes,directories=no,copyhistory=no");
	} else {
		window.open(strpath,"shn_window","width=955,height=600,left=0,top=0,toolbar=no,location=no,status=no,scrollbars=yes,resizable=yes,directories=no,copyhistory=no");
	}
}

function OpenRefer(strpath, https) {
	if (https == "true") {
		window.location.href = "https://www.shiphazmat.net/" + strpath;
	} else {
		window.location.href = strpath;
	}
}

function LearnMore() {
		window.open("introduction.htm","shnet2","width=670,height=529,left=0,top=0,toolbar=no,location=no,scrollbars=no,resizable=no,status=no");
		//window.open("learnmore/default.asp","shnet2","width=800,height=600,left=10,top=10,toolbar=no,location=yes,scrollbars=yes,resizable=yes,status=yes");
	}

var iTimer;

function openMenu(obj, menuitem, leftIndent){
	closeMenu();
	clearMenuTimer();
	
	var osTop = 60;
	var osLeft = parseInt(leftIndent);
	var myPos;
	myPos = findPos(obj)
	//alert(myPos[1] + "+" + osTop);
	document.getElementById(menuitem).style.top = myPos[1] + osTop + "px";
	document.getElementById(menuitem).style.left = myPos[0] + osLeft + "px";
	document.getElementById(menuitem).style.display = "block";
}

function closeMenu(){
	
	var sMenu = "mnu";
	var tmpMenu;
	var sMenuNumber;
	for(i=1;i<5;i++) {
		sMenuNumber = String(i);
		tmpMenu = sMenu + sMenuNumber;
		document.getElementById(tmpMenu).style.display = "none";
	}
}

function clearMenuTimer(){
	clearTimeout(iTimer);
}

function findPos(obj) {
	var curleft = curtop = 0;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		curtop = obj.offsetTop
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
			curtop += obj.offsetTop
		}
	}
	return [curleft,curtop];
}