function traiter_plateforme()
{
	version=document.forms['form_log'].elements['liste_plateforme'].value;
	if(version==1)
	{
		document.getElementById("fenetre_1").style.display="block";
		document.getElementById("fenetre_2").style.display="none";
	}else if(version==2)
	{
		document.getElementById("fenetre_1").style.display="none";
		document.getElementById("fenetre_2").style.display="block";
	}
}
function traiter_login()
{
	nom=document.forms['form_log'].elements['nom_utilisateur'].value;
	version=document.forms['form_log'].elements['liste_plateforme'].value;	
	pass=document.forms['form_log'].elements['mot_pass_'+version].value;
	for (i=0; i<document.forms.form_log.liste_plateforme.options.length; i++)
	{ 
		if (document.forms.form_log.liste_plateforme.options[i].selected ) 
		{ 
			plateforme= document.forms.form_log.liste_plateforme.options[i].innerHTML; 
			document.forms['form_log'].elements['plateforme'].value=plateforme;
		} 
	} 
	if(version==2)
	{
		if(nom=="")
		{
			alert ("Nom Manquant !");
		}else{
			if(pass=="")
			{
				alert ("Mot de passe Manquant !");
			}else{
				document.forms['form_log'].submit();
			}
		}
	}else if(version==1)
	{	
		if(pass=="")
		{
			alert ("Mot de passe Manquant !");
		}else{
			document.forms['form_log'].submit();
		}
	}
}
function touche_up()
{
	var touche=gk?e.which:window.event.keyCode;
	if(touche==13)
	{
		traiter_login();
	}
}
var gk=window.Event?1:0; 
document.onkeydown = touche_up;