function viewPI(lang){	
	var piNL = $('piDutch');
	var piFR = $('piFrench');
	var piEN = $('piEnglish');
	if(lang == 'NL'){
		piNL.style.display = "block";
		piFR.style.display = "none";
		piEN.style.display = "none";
	}
	
	if(lang == 'FR'){
		piNL.style.display = "none";
		piFR.style.display = "block";
		piEN.style.display = "none";
	}
	
	if(lang == 'EN'){
		piNL.style.display = "none";
		piFR.style.display = "none";
		piEN.style.display = "block";
	}
}