function visibilite1(thingId)
{
 var i;
 var targetElement;
 targetElement = document.getElementById("divid" + thingId) ;
 targetElement2 = document.getElementById("divid2") ;
 if ( targetElement.style.display == "none"){
     targetElement.style.display = "" ;
	 targetElement2.style.display = "none" ;
 }
 else
     targetElement.style.display = "none" ;
} 

function visibilite2(thingId)
{
 var i;
 var targetElement;
 targetElement = document.getElementById("divid" + thingId) ;
  targetElement2 = document.getElementById("divid1") ;
 if ( targetElement.style.display == "none"){
     targetElement.style.display = "" ;
	  targetElement2.style.display = "none" ;
 }
 else
     targetElement.style.display = "none" ;
}