var visible = 0;
function showmenu()
{
	if(visible == 0)
	{
	for(var i = 1 ; i < 20 ; i++)
	{
		document.getElementById("lewo["+i+"]").style.visibility="visible";
		var pole = "lewo["+i+"]";
		FadeOpacity(pole, 1, 80, 750, 25);
	}
	visible = 1;
	}
	else
	{
		for(var i = 1 ; i < 20 ; i++)
		{
		
		FadeOpacity("lewo["+i+"]", 80, 0, 750, 25);
		}
		visible = 0;
		setTimeout("HideIt()", 750);
	}
}
function HideIt()
{
		for(var i = 1 ; i < 20 ; i++)
		{
		document.getElementById("lewo["+i+"]").style.visibility="hidden";		
		}
		
}

function FadeOpacity(elemId, fromOpacity, toOpacity, time, fps)
{
    var steps = Math.ceil(fps * (time / 1000));
    var delta = (toOpacity - fromOpacity) / steps;
	
    
    FadeOpacityStep(elemId, 0, steps, fromOpacity, 
                    delta, (time / steps));
}

function FadeOpacityStep(elemId, stepNum, steps, fromOpacity, 
                         delta, timePerStep)
{
    SetOpacity(document.getElementById(elemId), 
               Math.round(parseInt(fromOpacity) + (delta * stepNum)));

    if (stepNum < steps)
        setTimeout("FadeOpacityStep('" + elemId + "', " + (stepNum+1) 
                 + ", " + steps + ", " + fromOpacity + ", "
                 + delta + ", " + timePerStep + ");", 
                   timePerStep);
}

function SetOpacity(elem, opacityAsInt)
{
    var opacityAsDecimal = opacityAsInt;
    
    if (opacityAsInt > 100)
        opacityAsInt = opacityAsDecimal = 100; 
    else if (opacityAsInt < 0)
        opacityAsInt = opacityAsDecimal = 0; 
    
    opacityAsDecimal /= 100;
    if (opacityAsInt < 1)
        opacityAsInt = 1; // IE7 bug, text smoothing cuts out if 0
    
    elem.style.opacity = (opacityAsDecimal);
    elem.style.filter  = "alpha(opacity=" + opacityAsInt + ")";
}

function TestNaglowek(number)
{
	if(number == 0)
	{
		document.getElementById('test').className="lewoNaglowek";
	}
	else
	{
		if(visible == 1)
		{
			document.getElementById('test').className="lewoOnNaglowek1";
		}
		else
		{
			document.getElementById('test').className="lewoOnNaglowek0";
		}
	}
}