function HideAll() {
	var nr1 = document.getElementById('accessoires');
	var nr2 = document.getElementById('toepassing');
	var nr3 = document.getElementById('technischegegevens');
	var nr4 = document.getElementById('eigenschappen');
	var nr5 = document.getElementById('downloads');
	
	var st1 = document.getElementById('accessoirelink');
	var st2 = document.getElementById('toepassinglink');
	var st3 = document.getElementById('technischegegevenslink');
	var st4 = document.getElementById('eigenschappenlink');
	var st5 = document.getElementById('downloadlink');
	
	nr1.style.visibility = "hidden";
	nr2.style.visibility = "hidden";
	nr3.style.visibility = "hidden";
	nr4.style.visibility = "hidden";
	nr5.style.visibility = "hidden";

	st1.className = '';
	st2.className = '';
	st3.className = '';
	st4.className = '';
	st5.className = '';
	
	nr1.style.display = "none";
	nr2.style.display = "none";
	nr3.style.display = "none";
	nr4.style.display = "none";
	nr5.style.display = "none";
}
function ShowAccessoires() {
	var obj= document.getElementById('accessoires');
	var link = document.getElementById('accessoirelink');
	obj.style.visibility = "visible";
	obj.style.display = "block";
	link.className = 'over';
	obj.className = 'contenttext_vis';
}
function ShowToepassing() {
	var obj= document.getElementById('toepassing');
	var link = document.getElementById('toepassinglink');
	obj.style.visibility = "visible";
	obj.style.display = "block";
	link.className = 'over';
	obj.className = 'contenttext_vis';
}
function ShowTechnischeGegevens()
{
	var obj= document.getElementById('technischegegevens');
	var link = document.getElementById('technischegegevenslink');
	obj.style.visibility = "visible";
	obj.style.display = "block";
	link.className = 'over';
	obj.className = 'contenttext_vis';
}
function ShowEigenschappen() {
	var obj= document.getElementById('eigenschappen');
	var link = document.getElementById('eigenschappenlink');
	obj.style.visibility = "visible";
	obj.style.display = "block";
	link.className = 'over';
	obj.className = 'contenttext_vis';
}
function ShowDownloads() {
	var obj= document.getElementById('downloads');
	var link = document.getElementById('downloadlink');
	obj.style.visibility = "visible";
	obj.style.display = "block";
	link.className = 'over';
	obj.className = 'contenttext_vis';
}