var NowXII = 'x';

function ChangeXII(){
	if(NowXII == 'x'){
		NowXII = 'ii';
	}else{
		NowXII = 'x';
	}
	
	document.getElementById('StereoChangeButton').src = 'stereopics/' + NowXII + '.png';
	document.getElementById('StereoFeeld').className = 'stereo' + NowXII;
}