if (typeof window.addEventListener != 'undefined')
	window.addEventListener('load', init, false);
else if (typeof document.addEventListener != 'undefined')
	document.addEventListener('load', init, false);
else if (typeof window.attachEvent != 'undefined')
	window.attachEvent('onload', init);

function init() 
{
	var x = document.getElementById("left");
	var anchs = x.getElementsByTagName("a");
	for(var i=0; i<anchs.length; i++)
	{
		var tgls = anchs[i].getAttribute("toggles")
		if(tgls != null)
		{

			anchs[i].onclick = toggleSubmenu;
			if( readCookie(tgls) != 'true' )
				document.getElementById(tgls).style.display = "none";
		}
	}
}

function toggleSubmenu()
{
	var tgls = this.getAttribute("toggles");
	var submenu = document.getElementById(tgls);
	if( submenu.style.display == "none" )
	{
		submenu.style.display = "";
		createCookie(tgls, "true");
	}
	else
	{
		submenu.style.display = "none";
		eraseCookie(tgls);
	}
	return false;
}

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);
}