function charge_image(_image) {
	var image = new Image;
	image.src = _image;
}

function affiche_reg(region)
  {
		var objet = document.getElementById("carte_image");
		objet.style.backgroundImage = 'url(images/carte_' + region + '.gif)';
		return true;
  }
function cache_reg() {
	var objet = document.getElementById("carte_image");
	objet.style.backgroundImage = 'url(images/none.gif)';
	return true;
}