function Browser() { 
	var ua, s, i;
	this.isIE    = false;  // Internet Explorer
	this.isNS    = false;  // Netscape 
	this.version = null; 
	ua = navigator.userAgent; 
	s = "MSIE"; 
	if ((i = ua.indexOf(s)) >= 0) { 
		this.isIE = 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" browser as NS 6.1. 
	s = "Gecko"; 
	if ((i = ua.indexOf(s)) >= 0) { 
		 this.isNS = true; 
		 this.version = 6.1; 
		 return; 
	} 
} 
 
var browser = new Browser(); 
 
//---------------------------------------------------------------------------- 
// Code for handling the menu bar and active button. 
//---------------------------------------------------------------------------- 
 
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 from the link to remove that annoying outline.  
button.blur(); 
 
	// Associate the named menu to this button if not already done. 
	// Additionally, initialize menu display. 
if (button.menu == null) { 
	button.menu = document.getElementById(menuId); 
	}

if (button.menu.isInitialized == null) {
	menuInit(button.menu);
	}
 
//For activate/deactivate on mouseover. 
// 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;
	} 
 
// Reset the currently active button, if any.
 
if (activeButton != null) { 
	resetButton(activeButton); 
	} 
	
// Activate this button, unless it was the currently active one. 

if (button != activeButton) {
	depressButton(button); 
	activeButton = button; 
	} else { 
	activeButton = null; 
	}
	return false; 
}
 
function buttonMouseover(event, menuId) { 
	var button; 
 
		//For activate/deactivate on mouseover. 
		// 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); 
	} 
}
 
function depressButton(button) { 
	var x, y; 
 
		// Update the button's style class to make it look like it's 
		// depressed. 
 
	button.className += " menuButtonActive"; 
 
		//For activate/deactivate on mouseover. 
		// 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; 
		} 
 
		// modify the x and y positions here to move the drop down
	button.menu.style.left = x + "px"; 
	button.menu.style.top  = y-2 + "px"; 
	button.menu.style.visibility = "visible"; 
} 
 
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"; 
	}
} 

//---------------------------------------------------------------------------- 
// Code to handle the menus and sub menus. 
//---------------------------------------------------------------------------- 

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 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); 
	} 
 
		//For activate/deactivate on mouseover. 
		// 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.isNS) { 
		maxX = window.scrollX + window.innerWidth; 
		maxY = window.scrollY + window.innerHeight; 
	} 
      
	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); 
	} 
      
	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"; 
 
		// Stop the event from bubbling. 

	if (browser.isIE) { 
		window.event.cancelBubble = true; 
	} else { 
		event.stopPropagation(); 
	} 
} 
 
function closeSubMenu(menu) { 
	if (menu == null || menu.activeItem == null) { 
		return; 
	}      
		// Recursively close any sub menus. 
 	if (menu.activeItem.subMenu != null) { 
		closeSubMenu(menu.activeItem.subMenu); 
		menu.activeItem.subMenu.style.visibility = "hidden"; 
		menu.activeItem.subMenu = null; 
	} 
	removeClassName(menu.activeItem, "menuItemHighlight" ); 
	menu.activeItem = null; 
} 
 
//For activate/deactivate on mouseover. Handler for mouseout 
// event on buttons and menus. 
 
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; 
	} 
} 
 
//---------------------------------------------------------------------------- 
// Code to initialize menus. 
//---------------------------------------------------------------------------- 

function menuInit(menu) { 
	var itemList, spanList; 
	var textEl, arrowEl; 
	var itemWidth; 
	var w, dw; 
	var i, j; 
 
		// For IE, replace 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 the 
		// arrows flush right. 
 
	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"; 
		} 
	} 
 
		// 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"; 
	} 
 
		// Mark menu as initialized. 
	menu.isInitialized = true; 
} 
 
//---------------------------------------------------------------------------- 
// General utility functions. 
//---------------------------------------------------------------------------- 
 
function getContainerWith(node, tagName, className) {
	// Starting with the given node, find the nearest containing element 
	// with the specified tag name and style class. 
 
	while (node != null) { 
		if (node.tagName != null && node.tagName == tagName && hasClassName(node, className)) { 
			return node; 
		}   
		node = node.parentNode; 
	} 
	return node; 
} 
 
function hasClassName(el, name) {
	var i, list; 
 
	// Return true if the given element currently has the given class name. 
	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 element's 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(" " ); 
	} 
} 
 
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 x coordinate of an element relative to the page. 
	
	y = el.offsetTop; 
	if (el.offsetParent != null) { 
		y += getPageOffsetTop(el.offsetParent); 
	} 
	return y; 
}