function add_harvest_field_form(id_field){
var nb = document.getElementById('unimarcfieldnumber_'+id_field).value *1;
nb++;
var mydiv = document.getElementById('add_zone_harvest_'+id_field);
var newcontent = document.createElement('div');
var nom_id = 'unimarcfield_'+id_field+'_'+nb;
newcontent.setAttribute('id',nom_id);
var harvest_field_form_add =document.getElementById('harvest_field_form_add_'+id_field);
var form=harvest_field_form_add.innerHTML;
// replave !!nb!! par nb
while (form.search('!!nb!!') != -1) form = form.replace('!!nb!!',nb);
newcontent.innerHTML = form;
mydiv.appendChild(newcontent);
document.getElementById('unimarcfieldnumber_'+id_field).value=nb;
}
function del_harvest_field_form(id_field,nb){
var nom_id = 'unimarcfield_'+id_field+'_'+nb;
var mydiv = document.getElementById('add_zone_harvest_'+id_field);
mydiv.removeChild(document.getElementById(nom_id));
}