function AffChoixVhs(){
document.getElementById('Vhs').style.visibility= 'visible';
document.getElementById('Aide_Chap_Extr').style.visibility= 'visible';
document.getElementById('VhsC').style.visibility= 'hidden';
document.getElementById('SVhs').style.visibility= 'hidden';
document.getElementById('SVhsC').style.visibility= 'hidden';
document.getElementById('Papier').style.visibility= 'hidden';
document.getElementById('Neg').style.visibility= 'hidden';
document.getElementById('Diapo').style.visibility='hidden';
document.getElementById('Aide_Cont_Gril').style.visibility='hidden';
EnCours='VHS';
}
function AffChoixVhsC(){
document.getElementById('Vhs').style.visibility= 'hidden';
document.getElementById('VhsC').style.visibility= 'visible';
document.getElementById('Aide_Chap_Extr').style.visibility= 'visible';
document.getElementById('SVhs').style.visibility= 'hidden';
document.getElementById('SVhsC').style.visibility= 'hidden';
document.getElementById('Papier').style.visibility= 'hidden';
document.getElementById('Neg').style.visibility= 'hidden';
document.getElementById('Diapo').style.visibility='hidden';
document.getElementById('Aide_Cont_Gril').style.visibility='hidden';
EnCours='VHSC';
}
function AffChoixSVhs(){
document.getElementById('Vhs').style.visibility= 'hidden';
document.getElementById('VhsC').style.visibility= 'hidden';
document.getElementById('SVhs').style.visibility= 'visible';
document.getElementById('Aide_Chap_Extr').style.visibility= 'visible';
document.getElementById('SVhsC').style.visibility= 'hidden';
document.getElementById('Papier').style.visibility= 'hidden';
document.getElementById('Neg').style.visibility= 'hidden';
document.getElementById('Diapo').style.visibility='hidden';
document.getElementById('Aide_Cont_Gril').style.visibility='hidden';
EnCours='SVHS';
}
function AffChoixSVhsC(){
document.getElementById('Vhs').style.visibility= 'hidden';
document.getElementById('VhsC').style.visibility= 'hidden';
document.getElementById('SVhs').style.visibility= 'hidden';
document.getElementById('SVhsC').style.visibility= 'visible';
document.getElementById('Aide_Chap_Extr').style.visibility= 'visible';
document.getElementById('Papier').style.visibility= 'hidden';
document.getElementById('Neg').style.visibility= 'hidden';
document.getElementById('Diapo').style.visibility='hidden';
document.getElementById('Aide_Cont_Gril').style.visibility='hidden';
EnCours='SVHSC';
}
function AffChoixPapier(){
document.getElementById('Aide_Chap_Extr').style.visibility= 'hidden';
document.getElementById('Vhs').style.visibility= 'hidden';
document.getElementById('VhsC').style.visibility= 'hidden';
document.getElementById('SVhs').style.visibility= 'hidden';
document.getElementById('SVhsC').style.visibility= 'hidden';
document.getElementById('Papier').style.visibility= 'visible';
document.getElementById('Aide_Cont_Gril').style.visibility='visible';
document.getElementById('Neg').style.visibility= 'hidden';
document.getElementById('Diapo').style.visibility='hidden';
EnCours='PAPIER';
}
function AffChoixNeg(){
document.getElementById('Aide_Chap_Extr').style.visibility= 'hidden';
document.getElementById('Vhs').style.visibility= 'hidden';
document.getElementById('VhsC').style.visibility= 'hidden';
document.getElementById('SVhs').style.visibility= 'hidden';
document.getElementById('SVhsC').style.visibility= 'hidden';
document.getElementById('Papier').style.visibility= 'hidden';
document.getElementById('Neg').style.visibility= 'visible';
document.getElementById('Aide_Cont_Gril').style.visibility='visible';
document.getElementById('Diapo').style.visibility='hidden';
EnCours='NEG';
}
function AffChoixDiapo(){
document.getElementById('Aide_Chap_Extr').style.visibility= 'hidden';
document.getElementById('Vhs').style.visibility= 'hidden';
document.getElementById('VhsC').style.visibility= 'hidden';
document.getElementById('SVhs').style.visibility= 'hidden';
document.getElementById('SVhsC').style.visibility= 'hidden';
document.getElementById('Papier').style.visibility= 'hidden';
document.getElementById('Neg').style.visibility= 'hidden';
document.getElementById('Diapo').style.visibility='visible';
document.getElementById('Aide_Cont_Gril').style.visibility='visible';
EnCours='DIA';
}
function EffaceOptions(){
document.getElementById('Aide_Chap_Extr').style.visibility= 'hidden';
document.getElementById('Aide_Cont_Gril').style.visibility='hidden';
document.getElementById('TabOptions').style.visibility='hidden';
document.getElementById('TabOptionsS').style.visibility='hidden';
document.getElementById('TabOptionsC').style.visibility='hidden';
document.getElementById('TabOptionsSC').style.visibility='hidden';
document.getElementById('TabOptionsN').style.visibility='hidden';
document.getElementById('TabOptionsD').style.visibility='hidden';
}