function showHide(div,icone,url_icone_plus,url_icone_moins){
	
	var div = document.getElementById(div); 
	
	var style = div.style.display;

	if(style == "none"){
		div.style.display = "block";
		$("#"+icone).attr("src", url_icone_moins);
		
		
	}
	else{
		div.style.display = "none";
		$("#"+icone).attr("src", url_icone_plus);
	}

}