function Slide (coordinate, caption_target, caption) {
	
	this.coordinate = coordinate;
	this.caption = caption;
	this.caption_target = caption_target;
	
	this.caption.hide ();
	
	
	// public functions
	this.select = Slide_select;
	this.unselect = Slide_unselect;
	this.get_coordinate = Slide_get_coord;
}


function Slide_get_coord () {
	return this.coordinate;
}

function Slide_select () {
	this.caption_target.html (this.caption.html());
}

function Slide_unselect () {
	
}