/* 
 * Preload
 */
function preload_image(_image) {
	var image = new Image;
	image.src = _image;
}

/* 
 * Change image par calque
 */
function change_image(region) {
	document.getElementById("area_image").style.backgroundImage = 'url(contact/pers_' + region + '.gif)';
	document.getElementById("contact_" + region).className = "DivR";

	return true;
}

/* 
 * Change calcque par image origine
 */ 
function hide_image(region) {
	document.getElementById("area_image").style.backgroundImage = 'url(contact/none.gif)';
	document.getElementById("contact_" + region).className = "DivAucun";

	return true;
}