luckyView.prototype.zoom = function () {
	document.getElementById('poster_stedenbouw').style.height='700px';
    if(this.z>=(this.images.length-1)) return;
    this.z+=1;
    this.addImage();
};

luckyView.prototype.unzoom = function (e) {
	document.getElementById('poster_stedenbouw').style.height='248px';
    if(this.z<=0) return;
    this.z-=1;
	this.addImage();
};