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

/* 
 * Change county image onmouseover on index page 
 */
function change_image(region) {
	var LinkItem = document.getElementById("Emploi_" + region);
	LinkItem.style.backgroundImage = 'url(ImgRegions/'+region+'_over.png)';
	return true;
}
function ImageFond(region) {
	var LinkItem = document.getElementById("fond");
	LinkItem.style.backgroundImage = 'url(../images/region/'+region+'.jpg)';
	return true;
}


/* 
 * Change back county image onmouseout on index page
 */ 
function hide_image(region) {
	var LinkItem = document.getElementById("Emploi_" + region);
	LinkItem.style.backgroundImage = 'none';
	
	for (var i=0 ; i <document.images.length; i++){
document.images[i].style.zIndex = 100;
	}
	LinkItem.style.zIndex = 10;	

	return true;
}

function ImgZindex(region) {
	var ImgRegion = document.getElementById(region);	
	//document.getElementById("France").style.zIndex=200;
	for (var i=1 ; i <document.images.length; i++){ document.images[i].style.zIndex = 100;}
	ImgRegion.style.zIndex = 10;
	document.getElementById("France").style.zIndex = 1;
	
	var LinkItem = document.getElementById("fond");
	LinkItem.style.backgroundImage = 'none';

	return true;
}