function d_obj(id){
	var o;
	if (document.all) o = document.all(id);
	else if (document.getElementById) o = document.getElementById(id); 
	else if (document.layers) o = document.layers[id];
	if (o) return(o);
	return(null);
}


function zoom(d) {
	obj = d_obj("video");
	if(obj){
		if (d==0) {
			nw = obj.width*0.9;
			nh = obj.height*0.9;
		} else {
			nw = obj.width*1.1;
			nh = obj.height*1.1;
		}
		obj.width = nw;
		obj.height = nh;
	}
}