lorsque je clique sur un bouton ajouter label
<LABEL>Type : </LABEL>
MPTS
<input type="radio" name="type" value="mpts" class="OPTION"
onCnlick="document.getElementById('ajt').style.visibility = 'visible';"/>
SPTS
<input type="radio" name="type" value="spts" class="OPTION"
onClick="document.getElementById('ajt').style.visibility = 'hidden';">
<p>
<p>
<input type="submit" id="ajt" name="ajout" value="ajouter" >
</p>