/***Vars and functions for menu***/
	
//vars for current header and menu
var activeHeader = null;
var activeMenu = null;

isNav = (navigator.appName.indexOf("Netscape") != -1) ? true : false;
isIE = (navigator.appName.indexOf("Microsoft") != -1) ? true : false;
	
//Sets the current header and menu
function setMenu(menuHeaderID,menuID,menuType,menuClass)
{
	var top = 0;
	var left = 0;
	var width = 0;
	var currentEle;
	
	if(document.all)
	{
		if(activeHeader != null && activeMenu != null)
		{
			if(activeMenu.style.visibility != 'hidden')
			{
				menuHide();
				showSelect();
			}
		}
		
		activeHeader = eval("document.all('" + menuHeaderID + "');");
		activeMenu = eval("document.all('" + menuID + "');");
	
		menuChange(activeHeader, menuClass);
		currentEle = activeHeader;
			
		//Find the top and left of header and its parent elements
		while(currentEle.tagName.toLowerCase() != 'body')
		{
			top += currentEle.offsetTop;
			left += currentEle.offsetLeft;
			currentEle = currentEle.offsetParent;
		}
			
		//Add the width of the header, and width of extra image.
		if (menuType == 'down'){
			top += (activeHeader.offsetHeight);
			width = activeHeader.offsetWidth;
		}
		else {
			top += -(parseInt(activeMenu.offsetHeight / 2));
			left += (activeHeader.offsetWidth);
		}
					
		activeMenu.style.left = left;
		activeMenu.style.top = top;
		if (width > 0){
			activeMenu.style.width = width;
		}
		
		hideSelect();
		menuShow();
			
		event.cancelBubble = true;
	}
}
	
//Show the current menu
function menuShow()
{
	if(document.all)
	{
		//activeHeader.className = 'over';
		activeMenu.style.visibility = 'visible';
	}
}
	
//Hide the current menu
function menuHide()
{
	if(document.all)
	{
		//activeHeader.className = 'norm';
		activeMenu.style.visibility = 'hidden';
	}
}
	
//Hide the current menu and reset vars
//if the moved to element is not contained
//within the menu.
function hideMenu()
{
	if(document.all)
	{
		if(activeHeader != null && activeMenu != null)
		{
			//Check if the "moved to" element is not 
			//contained within activeMenu.
			if(!activeMenu.contains(event.toElement)) 
			{
				activeMenu.style.visibility = 'hidden';
				//activeHeader.className = 'norm';
				menuChange(activeHeader, 'menuRegular');
				activeHeader = null;
				activeMenu = null;
				showSelect();
			}
		}
	}
}
	
//show dropdown when menu is hidden
function showSelect()
{
	var obj;
		
	for(var i = 0; i < document.all.tags("select").length; i++)
	{
		obj = document.all.tags("select")[i];
		if(!obj || !obj.offsetParent)
			continue;
		obj.style.visibility = 'visible';
	}
}
	
//hide dropdown so menu can cover it when menu is visible
function hideSelect()
{
	var obj;
	var currentEle;
	var top = 0;
	var left = 0;
	var menuHeight;
	var timeout;
		
	for(var i = 0; i < document.all.tags("select").length; i++)
	{
		obj = document.all.tags("select")[i];
		currentEle = obj;
		
		while(currentEle.tagName.toLowerCase() != 'body')
		{
			top += currentEle.offsetTop;
			left += currentEle.offsetLeft;
			currentEle = currentEle.offsetParent;
		}
		if(activeMenu != null)
		{
			menuHeight = (activeMenu.offsetTop + activeMenu.offsetHeight);
				
			if(top < menuHeight)
			{			
				if((left < (activeMenu.offsetLeft + activeMenu.offsetWidth)) && (left + obj.offsetWidth > activeMenu.offsetLeft)) 
					obj.style.visibility = 'hidden';
			}
		}
		top = 0;
		left = 0;
	}
}

//Hightlight the menu option
function menuChange(srcEle, srcClass)
{
	if(srcEle.className.toLowerCase() == 'menuregular')
	{
		srcEle.className = srcClass;
	}
	else
	{
		if (srcClass.length > 0)
		{
			srcEle.className = srcClass;
		}
	}
}