$(document).ready(function() {

		$(".flip-flop-menu > li > span").find("+ ul").slideUp(1);
	    
	    // add an indicator to the menu items to show there is a child menu
		$(".flip-flop-menu > li > span").css({backgroundImage: "url(" + siteRoot + "javascript/jquery/images/flip-flop-menu-down-arrow.gif)"}); 
		
		$(".flip-flop-menu > li > span").each(function() {
			toggleMenu(this);
			checkCookie(this);
		});

		function checkCookie(id)
			{
				// Check if there is a cookie set for a sub menu 
				// If there is then show the menu
				
				var cookieName = id.id;
				
				var c = readCookie(cookieName);
				
				if(c === 'show') {
					
					$(id).each(function() {
					
						$(this).css({backgroundImage: "url(" + siteRoot + "javascript/jquery/images/flip-flop-menu-up-arrow.gif)"});
						$(this).find("+ ul").slideDown('fast');
						
					});
					
				}
			}

		function toggleMenu(id)
			{
				$(id).click(function() {
					
					// toggle the +/- indicators
					
					togglePlusMinus(this);	
					
					// toggle the menu open or closed
					
					$(this).find("+ ul").slideToggle("fast");
					
				});
			}
			
		function togglePlusMinus(id)
			{
			
				$(id).each(function() {
				
					if($(this).find("+ ul").is(':visible'))
						{
							
							$(this).css({backgroundImage: "url(" + siteRoot + "javascript/jquery/images/flip-flop-menu-down-arrow.gif)"});
							
							eraseCookie(this.id);
							
						}
					else
						{
		
							$(this).css({backgroundImage: "url(" + siteRoot + "javascript/jquery/images/flip-flop-menu-up-arrow.gif)"});
							
							createCookie(this.id, 'show', 365);
							
						}
				
				});
			}

});

// cookie functions http://www.quirksmode.org/js/cookies.html

function createCookie(name,value,days)
	{
		if (days)
		{
			var date = new Date();
			date.setTime(date.getTime()+(days*24*60*60*1000));
			var expires = "; expires="+date.toGMTString();
		}
		else var expires = "";
		document.cookie = name+"="+value+expires+"; path=/";
	}
function readCookie(name)
	{
		var nameEQ = name + "=";
		var ca = document.cookie.split(';');
		for(var i=0;i < ca.length;i++)
		{
			var c = ca[i];
			while (c.charAt(0)==' ') c = c.substring(1,c.length);
			if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
		}
		return null;
	}
function eraseCookie(name)
	{
		createCookie(name,"",-1);
	}