function afficher(obj){document.getElementById(obj).style.display='';	}
function masquer(obj){document.getElementById(obj).style.display='none';	}

function change_img_evenat(){document.getElementById('img_evenat').src='../img/national_on.gif';document.getElementById('img_eveinter').src='../img/internationnal_off.gif';
							 document.getElementById('tab_evenat').style.display='';document.getElementById('tab_eveinter').style.display='none';}

function change_img_eveinter(){ document.getElementById('img_evenat').src='../img/national_off.gif';document.getElementById('img_eveinter').src='../img/internationnal_on.gif';
								document.getElementById('tab_evenat').style.display='none';document.getElementById('tab_eveinter').style.display='';}

function sendData(param, page, div)
	{
		if(document.all)
		{
			//Internet Explorer
			var XhrObj = new ActiveXObject("Microsoft.XMLHTTP") ;
		}//fin if
		else if(window.XMLHttpRequest)
		{
		    //Mozilla
			var XhrObj = new XMLHttpRequest();
		}//fin else
		
		else{
			alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest..."); 
		}


		//définition de l'endroit d'affichage:
		var content = document.getElementById(div);
		XhrObj.open("POST", page);

		//Ok pour la page cible
		XhrObj.onreadystatechange = function()
		{
			if (XhrObj.readyState == 4 && XhrObj.status == 200)
				
				content.innerHTML = XhrObj.responseText ;
		}

		
		XhrObj.setRequestHeader("Content-type","application/x-www-form-urlencoded");
		XhrObj.send(param);
	}//fin fonction SendData

function getSelectedRadioValue(name_radio){
   radios = document.getElementsByName(name_radio);
   var notFound = true;
   var i=0;
   while(i<radios.length && notFound){
      if(radios[i].checked){
         notFound = false;
      }
      i++;
   }  
        i -= 1;
        if(!notFound && !isNaN(radios[i].value) ){return radios[i].value;}
		else{return false;}
}