function preload_image(_image) {
	var image = new Image;
	image.src = _image;
}
function change_image(siteracine, type, region) {
	var ShowItem = document.getElementById('area_image');
	var LinkItem = document.getElementById(type + '_' + region);
    if (type=='region') ShowItem.style.backgroundImage = 'url(' + siteracine + 'css/img/' + region + '.gif)';
	if (type=='departement') ShowItem.style.backgroundImage = 'url(' + siteracine + 'css/img/regions/departements/' + region + '.gif)';
    LinkItem.style.Color = '#0066FF';
	LinkItem.style.textDecoration = 'underline';
	return true;
}
function hide_image(siteracine, type, region) {
	var ShowItem = document.getElementById('area_image');
	var LinkItem = document.getElementById(type + '_' + region);
	ShowItem.style.backgroundImage = 'url(' + siteracine + 'css/none.gif)';
	LinkItem.style.Color = '#3333CC';
	LinkItem.style.textDecoration = 'none';
	return true;
}