function _get(obj) { 
	return(document.getElementById(obj)); 
	}

function aff_form_client() {  
	obj = _get("form_client"); 
	obj.style.display = "block"; 
	
	obj = _get("form_newsletter"); 
	obj.style.display = "none"; 
	}
	
function aff_form_newsletter() {  
	obj = _get("form_newsletter"); 
	obj.style.display = "block"; 
	obj = _get("form_client"); 
	obj.style.display = "none"; 
	}	
	
var ind_courant = 1 ; 

function afficher_photo(i, img, legende,  w,h) { 
	obj = "vig" + String(i); 
	_get(obj).className="vig_on"; 
	
	obj = "vig" + String(ind_courant); 
	_get(obj).className="vig_off"; 
	
	obj = "legende_ref"
	_get(obj).innerHTML= legende ; 

	
	document.images['im_ref'].src="visus/" + img; 
	document.images['im_ref'].style.width= String(w) + "px"; 
	document.images['im_ref'].style.height= String(h) + "px"; 
	
	ind_courant = i ; 
}