var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1;
var ns6=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1;
var ns4=document.layers;

function ChgVrij(i)
{
	var oStyle = document.getElementById("chgkleur"+i);
		oStyle.className='beschikbaar';
}

function ChgAanvraag(i)
{
	var oStyle = document.getElementById("chgkleur"+i);
		oStyle.className='opaanvraag';
}