function start(index)
{
	current = readCookie("menu");
	
	if ( current == '' )
	{
		current = 'subnav-machines';		
	}

	if ( index != 1 )
	{
		showMenu ( current );
	}
}

function showMenu( targetID ) 
{

	createCookie("menu", targetID, 10);
	
	if (document.getElementById) {

		var target = document.getElementById( current );
		
		if ( !target )
		{
			target = document.getElementById( "subnav-machines" );
		}

		if (targetID == current) {
			if (target.style.display == "none") {
				target.style.display = "block";
			} else {
				target.style.display = "none";
			}
		} else {
			target.style.display = "none";
				
			target = document.getElementById( targetID );
			target.style.display = "block";
			current = targetID;
		}
	}			
}
	




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) 
		{
	//	alert(">> readcookie" +c.substring(nameEQ.length,c.length));
			return c.substring(nameEQ.length,c.length);
		}
	}
	return null;
}

function eraseCookie(name)
{
	createCookie(name,"",-1);
}