function toggle(face, impression){

	if(impression=="sans"){
		document.getElementById("option_"+face).style.display = "none";
		document.getElementById("couleur_"+face).style.display = "none";
	}else if(impression=="numerique"){
		document.getElementById("option_"+face).style.display = "";
		document.getElementById("couleur_"+face).style.display = "none";
		
	}else if(impression=="serigraphie"){
		document.getElementById("option_"+face).style.display = "";
		document.getElementById("couleur_"+face).style.display = "";
		
	}	
}