function Browser() {
	var ua, s, i;
	
	this.isIE = false; //Internet Explorer
	this.isOP = false; //Opera
	this.isNS = false; //Netscape
	this.version = null;
	
	ua = navigator.userAgent;
	
	s = "Opera";
	
	if ((i = ua.indexOf(s)) >= 0) {
		this.isOP = true;
		this.version = parseFloat(ua.substr(i + s.length));
		return;
	}
	
	s = "Netscape6/";
	if ((i = ua.indexOf(s)) >= 0) {
		this.isNS = true;
		this.version = parseFloat(ua.substr(i + s.length)) ;
		return;
	}
	//treat any other gecko as netscape 6.1
	
	s = "Gecko";
	if ((i = ua.indexOf(s)) >= 0) {
		this.isNS = true;
		this.version = 6.1;
		return;
	}
	
	s = "MSIE";
	if ((i = ua.indexOf(s))) {
		this.isIE = true;
		this.version = parseFloat(ua.substr(i + s.length));
		return;
	}
}

var browser = new Browser();


						
//utility functions
//Starting with the given node find the nearest containing element with the specified tag name and style class

function getContainerWith(node, tagName, className) {
	while (node!= null) {
		if (node.tagName != null && node.tagName == tagName && hasClassName(node, className))
		return node;
		node = node.parentNode;
	}
	return node;
}

//return true if the given element currently has the given class name or return false

function hasClassName(el, name) {
	var i, list;
	list = el.className.split(" ");
	for (i = 0; i < list.length; i++)
	if (list[i] == name)
		return true;
	return false;
}

function removeClassName(el, name) {
	var i, curList, newList;
	
	if (el.className == null)
	return;
	
	//remove the given class name from the elements className property
	
	newList = new Array();
	curList = el.className.split(" ");
	for (i = 0; i < curList.length; i++)
		if (curList[i] != name)
			newList.push(curList[i]);
		el.className = newList.join(" ");
}

//positioning functions

function getPageOffsetLeft(el) {
	var x;
	//return the x coordinate of an element relative to the page.
	
	x = el.offsetLeft;
	if(el.offsetParent != null)
		x += getPageOffsetLeft(el.offsetParent);
		return x;
}
function getPageOffsetTop(el) {
	var y;
	//return the y coordinate of an element relative to the top of the page
	
	y = el.offsetTop;
	if (el.offsetParent !=null)
		y += getPageOffsetTop(el.offsetParent);
		return y;
}

var activeButton = null;

function buttonClick(event, menuId) {
	var button;
	
	//get the target button element
	
	if (browser.isIE)
	button = window.event.srcElement;
	else
	button = event.currentTarget;
	
	//blur focus to eliminate outline
	
	button.blur();
	
// Associate the named menu to this button if not already done addtionally initialize menu display

	if (button.menu == null){
		button.menu = document.getElementById(menuId);
		if (button.menu.isInitialized == null)
		menuInit(button.menu);
	}
	
	 // Set mouseout event handler for the button, if not already done.

  if (button.onmouseout == null)
    button.onmouseout = buttonOrMenuMouseout;

 // Exit if this button is the currently active one.

  if (button == activeButton)
    return false;
	
// checks to see if another button is currently active using the global activeButton if so deactivates it

  if (activeButton != null)
    resetButton(activeButton);

// it then makes this button the active one unless it was the active one in which case it is left deactivated

if (button != activeButton) {
	depressButton(button);
	activeButton = button;
}
else
activeButton = null;
return false;
}

function buttonMouseover(event, menuId) {

  var button;



  // Activates this button's menu if no other is currently active.

  if (activeButton == null) {
    buttonClick(event, menuId);
    return;
  }


  // Find the target button element.

  if (browser.isIE)
    button = window.event.srcElement;
  else
    button = event.currentTarget;
	
	 // If any other button menu is active, make this one active instead.

  if (activeButton != null && activeButton != button)
    buttonClick(event, menuId);
}

//to activate a button the menuButtonActive style class is added to its className property

function depressButton(button) {

  var x, y;

  // Update the button's style class to make it look like it's
  // depressed.

  button.className += " menuButtonActive";



  // Set mouseout event handler for the button, if not already done.

   if (button.onmouseout == null)
    button.onmouseout = buttonOrMenuMouseout;
  if (button.menu.onmouseout == null)
    button.menu.onmouseout = buttonOrMenuMouseout;


  // Position the associated drop down menu under the button and
  // show it.

  x = getPageOffsetLeft(button);
  y = getPageOffsetTop(button) + button.offsetHeight;

  // For IE, adjust position.

  if (browser.isIE) {
    x += button.offsetParent.clientLeft;
    y += button.offsetParent.clientTop;
  }

  button.menu.style.left = x + "px";
  button.menu.style.top  = y + "px";
  button.menu.style.visibility = "visible";

  // For IE; size, position and show the menu's IFRAME as well.

  if (button.menu.iframeEl != null)
  {
    button.menu.iframeEl.style.left = button.menu.style.left;
    button.menu.iframeEl.style.top  = button.menu.style.top;
    button.menu.iframeEl.style.width  = button.menu.offsetWidth + "px";
    button.menu.iframeEl.style.height = button.menu.offsetHeight + "px";
    button.menu.iframeEl.style.display = "";
  }
}

//deactivate the button by removing the menuButtonActive class

function resetButton(button) {

  // Restore the button's style class.

  removeClassName(button, "menuButtonActive");

  // Hide the button's menu, first closing any sub menus.

  if (button.menu != null) {
    closeSubMenu(button.menu);
    button.menu.style.visibility = "hidden";

    // For IE, hide menu's IFRAME as well.

    if (button.menu.iframeEl != null)
      button.menu.iframeEl.style.display = "none";
  }
}
/************************************************************************************************************
 menu  and sub code
********************************************************************************************************************/

function menuMouseover(event) {
	var menu;
// find the target menu element 

if (browser.isIE)
    menu = getContainerWith(window.event.srcElement, "DIV", "menu");
  else
    menu = event.currentTarget;

  // Close any active sub menu.

  if (menu.activeItem != null)
    closeSubMenu(menu);
}

function closeSubMenu(menu) {
	if (menu == null || menu.activeItem == null)
	return;
	
//recursively close any submenus

	if (menu.activeItem.subMenu != null) {
		closeSubMenu(menu.activeItem.subMenu);
		menu.activeItem.subMenu.style.visibility = "hidden";
		
	 
	 // For IE, hide the sub menu's IFRAME as well.

    if (menu.activeItem.subMenu.iframeEl != null)
      menu.activeItem.subMenu.iframeEl.style.display = "none";
   	
		menu.activeItem.subMenu = null;
	
	}
	
	removeClassName(menu.activeItem, "menuItemHighlight");
	menu.activeItem = null;

}

function menuItemMouseover(event, menuId) {

  var item, menu, x, y;

  // Find the target item element and its parent menu element.

  if (browser.isIE)
    item = getContainerWith(window.event.srcElement, "A", "menuItem");
  else
    item = event.currentTarget;
  menu = getContainerWith(item, "DIV", "menu");

  // Close any active sub menu and mark this one as active.

  if (menu.activeItem != null)
    closeSubMenu(menu);
  menu.activeItem = item;

  // Highlight the item element.

  item.className += " menuItemHighlight";

  // Initialize the sub menu, if not already done.

  if (item.subMenu == null) {
    item.subMenu = document.getElementById(menuId);
    if (item.subMenu.isInitialized == null)
      menuInit(item.subMenu);
  }

  // Set mouseout event handler for the sub menu, if not already done.

  if (item.subMenu.onmouseout == null)
    item.subMenu.onmouseout = buttonOrMenuMouseout;

  // Get position for submenu based on the menu item.

  x = getPageOffsetLeft(item) + item.offsetWidth;
  y = getPageOffsetTop(item);

  // Adjust position to fit in view.

  var maxX, maxY;

  if (browser.isIE) {
    maxX = Math.max(document.documentElement.scrollLeft, document.body.scrollLeft) +
      (document.documentElement.clientWidth != 0 ? document.documentElement.clientWidth : document.body.clientWidth);
    maxY = Math.max(document.documentElement.scrollTop, document.body.scrollTop) +
      (document.documentElement.clientHeight != 0 ? document.documentElement.clientHeight : document.body.clientHeight);
  }
  if (browser.isOP) {
    maxX = document.documentElement.scrollLeft + window.innerWidth;
    maxY = document.documentElement.scrollTop  + window.innerHeight;
  }
  if (browser.isNS) {
    maxX = window.scrollX + window.innerWidth;
    maxY = window.scrollY + window.innerHeight;
  }
  maxX -= item.subMenu.offsetWidth;
  maxY -= item.subMenu.offsetHeight;

  if (x > maxX)
    x = Math.max(0, x - item.offsetWidth - item.subMenu.offsetWidth
      + (menu.offsetWidth - item.offsetWidth));
  y = Math.max(0, Math.min(y, maxY));

  // Position and show the sub menu.

  item.subMenu.style.left       = x + "px";
  item.subMenu.style.top        = y + "px";
  item.subMenu.style.visibility = "visible";

  // For IE; size, position and display the menu's IFRAME as well.

  if (item.subMenu.iframeEl != null)
  {
    item.subMenu.iframeEl.style.left    = item.subMenu.style.left;
    item.subMenu.iframeEl.style.top     = item.subMenu.style.top;
    item.subMenu.iframeEl.style.width   = item.subMenu.offsetWidth + "px";
    item.subMenu.iframeEl.style.height  = item.subMenu.offsetHeight + "px";
    item.subMenu.iframeEl.style.display = "";
  }

  // Stop the event from bubbling.

  if (browser.isIE)
    window.event.cancelBubble = true;
  else
    event.stopPropagation();
}

//idenitfies the targetmenu and checks to see if it has an activeItem set, if so calls closeSub menu()


function buttonOrMenuMouseout(event) {

  var el;

  // If there is no active button, exit.

  if (activeButton == null)
    return;

  // Find the element the mouse is moving to.

  if (browser.isIE)
    el = window.event.toElement;
  else if (event.relatedTarget != null)
      el = (event.relatedTarget.tagName ? event.relatedTarget : event.relatedTarget.parentNode);

  // If the element is not part of a menu, reset the active button.

  if (getContainerWith(el, "DIV", "menu") == null) {
    resetButton(activeButton);
    activeButton = null;
  }
}
/*********************************************************************************************
initiate menu bars and sub menu bars
**********************************************************************************************/

function menuInit(menu) {
	var itemList, spanList;
	var textEL, arrowEL;
	var itemWidth;
	var w, dw;
	var i, j;
	
// for IE replace the arrow characters

	 if (browser.isIE) {
    menu.style.lineHeight = "2.5ex";
    spanList = menu.getElementsByTagName("SPAN");
    for (i = 0; i < spanList.length; i++)
      if (hasClassName(spanList[i], "menuItemArrow")) {
        spanList[i].style.fontFamily = "Webdings";
        spanList[i].firstChild.nodeValue = "4";
      }
  }
	
//Find the width of a menu item

	itemList = menu.getElementsByTagName("a");
	if (itemList.length > 0)
		itemWidth = itemList[0].offsetWidth;
		else
		return;
		
//for items with arrows add padding to item text to make arrows flush

	for (i = 0; i < itemList.length; i++) {
		spanList = itemList[i].getElementsByTagName("SPAN");
    textEl  = null;
    arrowEl = null;
    for (j = 0; j < spanList.length; j++) {
      if (hasClassName(spanList[j], "menuItemText"))
        textEl = spanList[j];
      if (hasClassName(spanList[j], "menuItemArrow"))
        arrowEl = spanList[j];
    }
    if (textEl != null && arrowEl != null) {
      textEl.style.paddingRight = (itemWidth 
        - (textEl.offsetWidth + arrowEl.offsetWidth)) + "px";
  // For Opera, remove the negative right margin to fix a display bug.

      if (browser.isOP)
        arrowEl.style.marginRight = "0px";
    }
  }

  // Fix IE hover problem by setting an explicit width on first item of
  // the menu.

  if (browser.isIE) {
    w = itemList[0].offsetWidth;
    itemList[0].style.width = w + "px";
    dw = itemList[0].offsetWidth - w;
    w -= dw;
    itemList[0].style.width = w + "px";
  }

  // Fix the IE display problem (SELECT elements and other windowed controls
  // overlaying the menu) by adding an IFRAME under the menu.

  if (browser.isIE) {
    menu.iframeEl = menu.parentNode.insertBefore(document.createElement("IFRAME"), menu);
    menu.iframeEl.style.display = "none";
    menu.iframeEl.style.position = "absolute";
  }

  // Mark menu as initialized.

  menu.isInitialized = true;
}
function writeglobalMenu() {

// menu 1 on page
	

//menu 2
	document.write("<div id='menu2' class='menu' onMouseOver='menuMouseover(event)'>" +
	"<a class='menuItem' href='show05/05_01.html'>Colour Showroom</a>" +
	"<a class='menuItem' href='service03/03_04.html'>Expert Advice<img src='images/spacer.gif' width='20px' height='1px' border='0'></a>" +
	"<a class='menuItem' href='utility04/04_04.html'>Past Clients</a>" +
	
	"</div>" +
	
	//example of sub menu2_1 connection from Menu 2
	
	//"<a class='menuItem' href='' onClick='return false;' onMouseOver='menuItemMouseover(event, 'NameDiv');'>" +
	//"<span class='menuItemText'>Menu 2 Item 4</span>" +
	//"<span class='menuItemArrow'>&#9654;</span></a>" +
	//"<div class='menuItemSep'></div>" +
	
	//"<a class='menuItem'href=''>Menu 2 Item</a></div>" +
		//"<div id ='NameDiv'>" +
		//"<div class='menu'>" +
		//"<a class='menuItem' href=''>Menu 1 Item 1</a>" +
		//"<a class='menuItem' href=''>Menu 1 Item 2</a>" +
		//"<a class='menuItem' href=''>Menu 1 Item 3</a>" +
		//"</div>" +
		//"</div>" +
//menu 3

	"<div id='menu3' class='menu' onMouseOver='menuMouseover(event)'>" +
	"<a class='menuItem' href='show05/05_01.asp'>Design Ideas</a></div>" +
	//"<a class='menuItem' href='show05/05_02.asp'>Colour Ideas</a>" +
	
	//example of sub menu3_1 connection from Menu 3
	
	//document.writeln("<a class='menuItem' href='' onClick='return false;' onMouseOver='menuItemMouseover(event,'menu1_2');'>");
	//document.writeln("<span class='menuItemText'>Menu 3 Item</span>");
	//document.writeln("<span class='menuItemArrow'>&#9654;</span></a>");
	//document.writeln("<div class='menuItemSep'></div>");
	
	//"<a class='menuItem'href=''>New Looks<img src='images/spacer.gif' width='30px' height='1px' border='0'></a>" +
	
//menu 4
	
	"<div id='menu4' class='menu' onMouseOver='menuMouseover(event)'>" +
	"<a class='menuItem' href='utility04/04_02.html'>Useful Links</a>" +
	
	//example of sub menu4_1 connection from Menu 4
	
	//document.writeln("<a class='menuItem' href='' onClick='return false;' onMouseOver='menuItemMouseover(event,'menu1_2');'>");
	//document.writeln("<span class='menuItemText'>Menu 4 Item</span>");
	//document.writeln("<span class='menuItemArrow'>&#9654;</span></a>");
	//document.writeln("<div class='menuItemSep'></div>");
	
	"</div>");
}