var lastBlock;
var lastBlockSub;

function toggleMenuBlock(showBlock, imgrechts, imglinks)
{
	var menuSwitch = document.getElementById(showBlock);
	if (lastBlock)
	{
		lastBlock.style.display = 'none';
	}
	menuSwitch.style.display = 'block';
	lastBlock = menuSwitch;
	document.getElementById('rechtsboven').style.backgroundImage = 'url('+ imgrechts +')';
	document.getElementById('linksmid').src = imglinks;
	
}

function toggleSubMenuBlock(showBlock)
{
	if (lastBlockSub)
	{
		lastBlockSub.style.display = 'none';
	}
	var menuSwitch = document.getElementById(showBlock);
	if (menuSwitch.style.display == 'block')
	{
		menuSwitch.style.display = 'none';
	} else
	{
		menuSwitch.style.display = 'block';
	}
	lastBlockSub = menuSwitch;
} 

function Init(eerste)
{
	if (eerste)
	{
		lastBlock = document.getElementById(eerste);
		lastBlock.style.display = 'block';
	}
}