function change_visibility(sLayerID, sLayerImgID)
{
	var pLayer = document.getElementById(sLayerID);
	var pLayerImg = document.getElementById(sLayerImgID);
	if (pLayer.style.display == "block")
	{
		pLayer.style.display = "none";
		pLayerImg.src = "./images/plus1.gif";
	}
	else
	{
		pLayer.style.display = "block";
		pLayerImg.src = "./images/minus1.gif";
	}
}

function MouseEventOver(sLayerID, sLayerImgID)
{
	var pLayer = document.getElementById(sLayerID);
	var pLayerImg = document.getElementById(sLayerImgID);
	if (pLayer.style.display == "block")
	{
		pLayerImg.src = "./images/minus1.gif";
	}
	else
	{
		pLayerImg.src = "./images/plus1.gif";
	}
}

function MouseEventOut(sLayerID, sLayerImgID)
{
	var pLayer = document.getElementById(sLayerID);
	var pLayerImg = document.getElementById(sLayerImgID);
	if (pLayer.style.display == "block")
	{
		pLayerImg.src = "./images/minus.gif";
	}
	else
	{
		pLayerImg.src = "./images/plus.gif";
	}
}

function ChangeImageKropa(sFilePath, sLayerImgID)
{
	var pLayerImg = document.getElementById(sLayerImgID);
	pLayerImg.src = sFilePath;
}