var isDOM = (document.getElementById ? true : false);
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);
function getRef(id) {
if (isDOM) return document.getElementById(id);
if (isIE4) return document.all[id];
if (isNS4) return document.layers[id];
}

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

function getSty(id) {
return (isNS4 ? getRef(id) : getRef(id).style);
}
// Hide timeout.
var popTimer = 0;
// Array showing highlighted menu items.
var litNow = new Array();
function popOver(menuNum, itemNum) {
clearTimeout(popTimer);
hideAllBut(menuNum);
litNow = getTree(menuNum, itemNum);
changeCol(litNow, true);
targetNum = menu[menuNum][itemNum].target;
if (targetNum > 0) {
thisX = parseInt(menu[menuNum][0].ref.left) + parseInt(menu[menuNum][itemNum].ref.left);
thisY = parseInt(menu[menuNum][0].ref.top) + parseInt(menu[menuNum][itemNum].ref.top);
with (menu[targetNum][0].ref) {
left = parseInt(thisX + menu[targetNum][0].x);
top = parseInt(thisY + menu[targetNum][0].y);
visibility = 'visible';
      }
   }
}
function popOut(menuNum, itemNum) {
if ((menuNum == 0) && !menu[menuNum][itemNum].target)
hideAllBut(0)
else
popTimer = setTimeout('hideAllBut(0)', 500);
}
function getTree(menuNum, itemNum) {

// Array index is the menu number. The contents are null (if that menu is not a parent)
// or the item number in that menu that is an ancestor (to light it up).
itemArray = new Array(menu.length);

while(1) {
itemArray[menuNum] = itemNum;
// If we've reached the top of the hierarchy, return.
if (menuNum == 0) return itemArray;
itemNum = menu[menuNum][0].parentItem;
menuNum = menu[menuNum][0].parentMenu;
   }
}

// Pass an array and a boolean to specify colour change, true = over colour.
function changeCol(changeArray, isOver) {
for (menuCount = 0; menuCount < changeArray.length; menuCount++) {
if (changeArray[menuCount]) {
newCol = isOver ? menu[menuCount][0].overCol : menu[menuCount][0].backCol;
// Change the colours of the div/layer background.
with (menu[menuCount][changeArray[menuCount]].ref) {
if (isNS4) bgColor = newCol;
else backgroundColor = newCol;
         }
      }
   }
}
function hideAllBut(menuNum) {
var keepMenus = getTree(menuNum, 1);
for (count = 0; count < menu.length; count++)
if (!keepMenus[count])
menu[count][0].ref.visibility = 'hidden';
changeCol(litNow, false);
}

// MENU CONSTRUCTION FUNCTIONS

function Menu(isVert, popInd, x, y, width, overCol, backCol, borderClass, textClass, tdClass) {
// True or false - a vertical menu?
this.isVert = isVert;
// The popout indicator used (if any) for this menu.
this.popInd = popInd
// Position and size settings.
this.x = x;
this.y = y;
this.width = width;
// Colours of menu and items.
this.overCol = overCol;
this.backCol = backCol;
// The stylesheet class used for item borders and the text within items.
this.borderClass = borderClass;
this.textClass = textClass;
this.tdClass = tdClass
// Parent menu and item numbers, indexed later.
this.parentMenu = null;
this.parentItem = null;
// Reference to the object's style properties (set later).
this.ref = null;
}

function Item(text, href, frame, length, spacing, target) {
this.text = text;
this.href = href;
this.frame = frame;
this.length = length;
this.spacing = spacing;
this.target = target;
// Reference to the object's style properties (set later).
this.ref = null;
}

function writeMenus(obj) {
if (!isDOM && !isIE4 && !isNS4) return;

for (currMenu = 0; currMenu < menu.length; currMenu++) with (menu[currMenu][0]) {
	// Variable for holding HTML for items and positions of next item.
	var str = '', itemX = 0, itemY = 0;

	// Remember, items start from 1 in the array (0 is menu object itself, above).
	// Also use properties of each item nested in the other with() for construction.
	for (currItem = 1; currItem < menu[currMenu].length; currItem++) with (menu[currMenu][currItem]) {
		var divID = 'menu' + currMenu + '_' + currItem;
		var tableID = 'table_' + currMenu + '_' + currItem
		var td1ID = 'td1_' + currMenu + '_' + currItem
		var td2ID = 'td2_' + currMenu + '_' + currItem

		// The width and height of the menu item - dependent on orientation!
		var w = (isVert ? width : length);
		var h = (isVert ? length : width);

		// Create a div or layer text string with appropriate styles/properties.
		if (isDOM || isIE4) {
			str += '<div id="' + divID + '" style="position: absolute; left: ' + itemX + '; top: ' + itemY + '; width: ' + w + '; height: ' + h + '; visibility: inherit; ';
			if (backCol) str += 'background: ' + backCol + '; ';
			str += '" ';
		}
		if (isNS4) {
			str += '<layer id="' + divID + '" left="' + itemX + '" top="' + itemY + '" width="' +  w + '" height="' + h + '" visibility="inherit" ';
			if (backCol) str += 'bgcolor="' + backCol + '" ';
		}
		if ( (borderClass) && ( currItem != (menu[currMenu].length) ) ) str += 'class="' + borderClass + '" ';

		// Add mouseover handlers and finish div/layer.
		str += 'onMouseOver="popOver(' + currMenu + ',' + currItem + ')" onMouseOut="popOut(' + currMenu + ',' + currItem + ')">';

		// Add contents of item (default: table with link inside).
		// In IE/NS6+, add padding if there's a border to emulate NS4's layer padding.
		// If a target frame is specified, also add that to the <a> tag.

		str += '<table id="' + tableID + '" width="' + (w - 8) + '" border="0" cellspacing="0" cellpadding="' + (!isNS4 && borderClass ? 3 : 0) + '"><tr><td class="' + tdClass + '" + id="' + td1ID + '" align="left" height="' + (h - 7) + '">' + '<a class="' + textClass + '" href="' + href + '"' + (frame ? ' target="' + frame + '">' : '>') + text + '</a></td>';
		if (target > 0) {
			// Set target's parents to this menu item.
			menu[target][0].parentMenu = currMenu;
			menu[target][0].parentItem = currItem;

			// Add a popout indicator.
			if (popInd) str += '<td id="' + td2ID + '" class="' + textClass + '" align="right">' + popInd + '</td>';
		}
		str += '</tr></table>' + (isNS4 ? '</layer>' : '</div>');
		if (isVert) itemY += length + spacing;
		else itemX += length + spacing;
	}
	if (isDOM) {
		var newDiv = document.createElement('div');
		document.getElementsByTagName('body').item(0).appendChild(newDiv);
		newDiv.innerHTML = str;
		ref = newDiv.style;
		ref.position = 'absolute';
		ref.visibility = 'hidden';
	}

	// Insert a div tag to the end of the BODY with menu HTML in place for IE4.
	if (isIE4) {
		document.body.insertAdjacentHTML('beforeEnd', '<div id="menu' + currMenu + 'div" ' + 'style="position: absolute; visibility: hidden">' + str + '</div>');
		ref = getSty('menu' + currMenu + 'div');
	}

	// In NS4, create a reference to a new layer and write the items to it.
	if (isNS4) {
		ref = new Layer(0);
		ref.document.write(str);
		ref.document.close();
	}

	for (currItem = 1; currItem < menu[currMenu].length; currItem++) {
		divid = 'menu' + currMenu + '_' + currItem;
		if (isDOM || isIE4) menu[currMenu][currItem].ref = getSty(divid);
		if (isNS4) menu[currMenu][currItem].ref = ref.document[divid];
	}
}
with(menu[0][0]) {
	ref.left = x;
	ref.top = y;
	ref.visibility = 'visible';
}
setColor();
if (obj)
	moveRoot(obj);
}

// Syntaxes: *** START EDITING HERE, READ THIS SECTION CAREFULLY! ***
//
// menu[menuNumber][0] = new Menu(Vertical menu? (true/false), 'popout indicator', left, top,
// width, 'mouseover colour', 'background colour', 'border stylesheet', 'text stylesheet');
//
// Left and Top are measured on-the-fly relative to the top-left corner of its trigger, or
// for the root menu, the top-left corner of the page.
//
// menu[menuNumber][itemNumber] = new Item('Text', 'URL', 'target frame', length of menu item,
//  additional spacing to next menu item, number of target menu to popout);
//
// If no target menu (popout) is desired, set it to 0. Likewise, if your site does not use
// frames, pass an empty string as a frame target.
//
// Something that needs explaining - the Vertical Menu setup. You can see most menus below
// are 'true', that is they are vertical, except for the first root menu. The 'length' and
// 'width' of an item depends on its orientation -- length is how long the item runs for in
// the direction of the menu, and width is the lateral dimension of the menu. Just look at
// the examples and tweak the numbers, they'll make sense eventually :).

var menu = new Array();

// Default colours passed to most menu constructors (just passed to functions, not
// a global variable - makes things easier to change later in bulk).
var defOver = '#D2ECFF', defBack = '#CECFCE';

// Default 'length' of menu items - item height if menu is vertical, width if horizontal.
var defLength = 16;

// Menu 0 is the special, 'root' menu from which everything else arises.
menu[0] = new Array();
menu[0][0] = new Menu(false, '', 5, 0, 50, 'D9ECF2', '', '', '', 'menucenter');
menu[0][1] = new Item('Product Quality Testing', 'ProductQualityTesting.aspx', '', 147, 0, 1);
menu[0][2] = new Item('<img src="/images/headermenudiv.gif" border=0>', '#', '', 3, 0, 0);
menu[0][3] = new Item('Product Quality Protection<BR>Go Eco Friendly Now', 'ProductQualityProtection.aspx', '', 184, 0, 2);
menu[0][4] = new Item('<img src="/images/headermenudiv.gif" border=0>', '#', '', 3, 0, 0);
menu[0][5] = new Item('Product Quality Process Equipment', 'ProductQualityProcessEquipment.aspx', '', 147, 0, 3);
menu[0][6] = new Item('<img src="/images/headermenudiv.gif" border=0>', '#', '', 3, 0, 0);
menu[0][7] = new Item('Catalog Index (A-Z)', '/catIndex.aspx?CategoryID=', '', 147, 0, 4);
menu[0][8] = new Item('<img src="/images/headermenudiv.gif" border=0>', '#', '', 3, 0, 0);
menu[0][9] = new Item('New Products', '/catIndex.aspx?CategoryID=11', '', 110, 0, 5);

menu[1] = new Array();
menu[1][0] = new Menu(true, '', 0, 50, 300, 'D9ECF2', '6EBAD4', '', '', '');
menu[1][1] = new Item('&nbsp;Instruments, Lab Equipment and Supplies', '/catIndex.aspx?CategoryID=1', '', 25, 0, 0);
menu[1][2] = new Item('&nbsp;Plant Wide Quality Monitoring', '/catIndex.aspx?CategoryID=7', '', 25, 0, 0);
menu[1][3] = new Item('&nbsp;Computer-based Instruments', '/catIndex.aspx?CategoryID=2', '', 25, 0, 0);

menu[2] = new Array();
menu[2][0] = new Menu(true, '', 0, 50, 300, 'D9ECF2', '6EBAD4', '', '', '');
menu[2][1] = new Item('&nbsp;What does biodegradable mean?', '/catIndex.aspx?CategoryID=12', '', 25, 0, 0);
menu[2][2] = new Item('&nbsp;Bio-based Cleansers', '/catIndex.aspx?CategoryID=13', '', 25, 0, 0);
menu[2][3] = new Item('&nbsp;Disinfection', '/catIndex.aspx?CategoryID=14', '', 25, 0, 0);
menu[2][4] = new Item('&nbsp;Bio-based Lubricants', '/catIndex.aspx?CategoryID=17', '', 25, 0, 0);
menu[2][5] = new Item('&nbsp;Bio-based Argicultural Pest Control', '/catIndex.aspx?CategoryID=15', '', 25, 0, 0);
menu[2][6] = new Item('&nbsp;Other Bio-based Products', '/catIndex.aspx?CategoryID=16', '', 25, 0, 0);

menu[3] = new Array();
menu[3][0] = new Menu(true, '', 0, 50, 300, 'D9ECF2', '6EBAD4', '', '', '');
menu[3][1] = new Item('&nbsp;Stainless Steel Products', '/catIndex.aspx?CategoryID=3', '', 25, 0, 0);
menu[3][2] = new Item('&nbsp;Custom Machining and Turning', '/catIndex.aspx?CategoryID=6', '', 25, 0, 0);

menu[4] = new Array();
menu[4][0] = new Menu(true, '', 0, 50, 300, 'D9ECF2', '6EBAD4', '', '', '');
menu[4][1] = new Item('&nbsp;Catalog Index (A-Z)', '/catIndex.aspx?CategoryID=', '', 25, 0, 0);

menu[5] = new Array();
menu[5][0] = new Menu(true, '', 0, 50, 300, 'D9ECF2', '6EBAD4', '', '', '');
menu[5][1] = new Item('&nbsp;New Products', '/catIndex.aspx?CategoryID=11', '', 25, 0, 0);

// *** OPTIONAL CODE FROM HERE DOWN ***

var popOldWidth = window.innerWidth;
nsResizeHandler = new Function('if (popOldWidth != window.innerWidth) location.reload()');

// This is a quick snippet that captures all clicks on the document and hides the menus
// every time you click. Use if you want.

function setColor() {
	for (menucount = 1; menucount <= 5 ; menucount++)
	{
		for (itemcount = 1; itemcount < menu[menucount].length; itemcount++)
		{
			with(menu[menucount][itemcount].ref) background = "#" + menu[menucount][0].backCol;
		}
	}
}

// This is just the moving command for the example.
function moveRoot(obj)
{
 with(menu[0][0].ref) left = findPos(obj)[0] + menu[0][0].x;
 with(menu[0][0].ref) top = findPos(obj)[1] + menu[0][0].y;
}