var layerStyleRef="layer.style.";
var layerRef="document.getElementById";
var styleSwitch=".style";
var visibleVar="visible";
	
function over(img,ref)
{
	document.images[img].src=ref;
}
	
function out(img,ref)
{
		document.images[img].src=ref;
}

function probel(n)
{
	for (i = 0; i < n; i++) 
	{
		document.write("&nbsp;");
	}
}
	
function showHideLayerSwitch(layerName)
{
	if (eval(layerRef+'("'+layerName+'")' +styleSwitch+'.visibility == visibleVar'))
	{
		hideLayer(layerName);
	}
	else
	{
		showLayer(layerName);
	}
}

function showLayer(layerName)
{
	eval(layerRef+'("'+layerName+'")' +styleSwitch+'.visibility="visible"');
}
function hideLayer(layerName)
{
	eval(layerRef+'("'+layerName+'")' +styleSwitch+'.visibility="hidden"');
}
function showLayer1(layerName)
{
	if (eval(layerRef+'("'+layerName+'")' +styleSwitch+'.visibility == visibleVar'))
	{
		showLayer(layerName);
	}
}

function hideLayer1(layerName)
{
	if (eval(layerRef+'("'+layerName+'")' +styleSwitch+'.visibility == visibleVar'))
	{
		hideLayer(layerName);
	}
}