// arrays of actual folder and container 
aNavFolder	  = new Array("navFolderAll", "", "", "");
aNavContainer = new Array("navContainerAll", "", "", "");

var nImgNumNow = 0;
function switchFolder(tnTreeLevel, tNavContainerID)
{
	var ul;
	var i;
	if (document.getElementById && aNavContainer[tnTreeLevel]=="")
	{
		ul = document.getElementById(tNavContainerID);
			
		if (tnTreeLevel == 1)
		{
		    switch (ul.style.display)
			{
				case "none":
				{
					ul.style.display = "block";
					for (i=1; i < 6; i++)
					{
						if ("navContainer1_" + i == tNavContainerID) continue;
						document.getElementById("navContainer1_" + i).style.display = "none";
						document.picBottom.src = images[nImgNumNow];
					}
					nImgNumNow += 1;
					if (nImgNumNow >= images.length)
					{
						nImgNumNow = 0;
					}
					break;
				}
				case "block":
				{
					ul.style.display = "none";
					//document.picBottom.src = images[0];
					break;
				}
			}
		}
		else
		{
			switch (ul.style.display)
			{
				case "none":
				{
					ul.style.display = "block";
					break;
				}
				case "block":
				{
					ul.style.display = "none";
					break;
				}
			}
		}
	}
}

function closeFolders(tnTreeLevel)
{
	var i;
	if (tnTreeLevel == 1)
	{
		if (document.getElementById)
		{
			for (i=1; i < 6; i++)
			{
				document.getElementById("navContainer1_" + i).style.display = "none";
				document.picBottom.src = images[nImgNumNow];
			}
			nImgNumNow += 1;
			if (nImgNumNow >= images.length)
				nImgNumNow = 0;
		}
	}	
}

function setMouseOverItem(tnTreeLevel, tObj)
{
	if (tnTreeLevel == 1)
	{
		tObj.style.backgroundColor='#338CDD';
	}
	else
	{	
		tObj.style.backgroundColor='#1C6AB2';
	}
}
function setMouseOverFolder(tnTreeLevel, tObjFolder)
{
	if (tnTreeLevel == 1)
	{
		tObjFolder.style.backgroundColor='#338CDD';
	}
	else if (aNavContainer[tnTreeLevel] != "")
	{	
		tObjFolder.style.backgroundColor='';
	}
	else
	{
		tObjFolder.style.backgroundColor='#1C6AB2';
	}
}

function setMouseOut(tnTreeLevel, tObj)
{
	if (tnTreeLevel == 1)
	{
		tObj.style.backgroundColor='#2974D0';
	}
	else
	{
		tObj.style.backgroundColor='';
	}
}

// Zufallsbild
var nImgNum = 0;
images = new Array;
images[nImgNum] = "/images/nav-bottom07.jpg";	nImgNum += 1;

var imagenumber = images.length;
var randomnumber = Math.random();
var rand1 = Math.round((imagenumber-1) * randomnumber) + 1;