function switch_div (divId, vorigedivId, positie) {
	var divteller = 0;
	if (divId == 0) {
		while (divteller <= 50) {
			if (document.getElementById(divteller)) {

				document.getElementById(divteller).style.visibility = 'hidden';
			}
		divteller = divteller + 1;
		}
		
	} 
	else {
		//var mijnId = document.getElementById(divId).id;
		while (divteller <=50) {
			if (document.getElementById(divteller)) {
				if (document.getElementById(divteller).id == divId) {
				document.getElementById(divteller).style.visibility = "visible";
				} 
				else if (document.getElementById(divteller).id == vorigedivId) {
				document.getElementById(divteller).style.visibility = "visible";
				}
				else {
				document.getElementById(divteller).style.visibility = "hidden";
				}
			}
		divteller = divteller + 1;
		}
	}
	divId = 0;
	vorigedivId = 0;
}

function ResizeImage (id, Breedte) {
	if (document.getElementById(id).width > Breedte) {
		document.getElementById(id).width = Breedte;
	}
}