function genereerBreedte()
{
	if (self.innerWidth)
	{
		frameHeight = self.innerWidth;
	}
	else if (document.documentElement && document.documentElement.clientWidth)
	{
		frameHeight = document.documentElement.clientWidth;
	}
	else if (document.body)
	{
		frameHeight = document.body.clientWidth;
	}
	document.getElementById('kolom_links').width = (frameHeight - 950) / 2 ;
	document.getElementById('kolom_rechts').width = (frameHeight - 950) / 2 ;
 
}

function gotoHref(Link)
{
	newwindow = window.open (Link) ;
}
function gotoHrefS(Link)
{
	location.href = Link ;
}

function changeBanners(aantal_banners)
{
	aantal_banners = aantal_banners ;
	var itemNr = aantal_banners ;
	for (i=1;i<=aantal_banners;i++)
	{
		if (document.getElementById('banner' + i).style.display != 'none')
		{
			itemNr = i + 1 ;
		}
	}

	if(itemNr > aantal_banners) 
	{
		itemNr = 1 ;
	}

	for (i=1;i<=aantal_banners;i++)
	{
			document.getElementById('banner' + i).style.display = 'none' ;
	}

	try
	{
		if(navigator.appName == 'Netscape')
		{
			document.getElementById('banner' + itemNr).style.display = 'table-row' ;
		} else {
			document.getElementById('banner' + itemNr).style.display = 'block' ;
		}
	}
	catch(err)
	{
	}
	updateBanners(aantal_banners) ;
}

function updateBanners(aantal)
{
	aantal_bn = aantal ; 
	setTimeout("changeBanners(aantal_bn)", 8000) ;
}