function afficheId(baliseId)
  {
  if (document.getElementById && document.getElementById(baliseId) != null)
    {
    document.getElementById(baliseId).style.visibility='visible';
    document.getElementById(baliseId).style.display='block';
    }
  }

function cacheId(baliseId)
  {
  if (document.getElementById && document.getElementById(baliseId) != null)
    {
    document.getElementById(baliseId).style.visibility='hidden';
    document.getElementById(baliseId).style.display='none';
    }
  }
  
  function switchID(baliseId){
	if(document.getElementById(baliseId)) {

		if(document.getElementById(baliseId).style.visibility == 'visible'){
			document.getElementById(baliseId).style.visibility='hidden';
			document.getElementById(baliseId).style.display='none';
		}
		else{
			document.getElementById(baliseId).style.visibility='visible';
			document.getElementById(baliseId).style.display='block';
		}
	}
}

  
  	function createChamp(i){
		var i2 = i + 1;
		document.getElementById('bouton'+i).innerHTML = ('<span id="champs'+i+'"><table border="0" width="100%"><tr><td style="white_space:nowrap" width="102"><span style="font-weight:bold">Author&nbsp;'+i+'&nbsp;Family&nbsp;Name:&nbsp;<br /><span style="font-size:80%">(<span style="font-style:italic" >i.e.</span> Smith)</span></span></td><td width="20"><input type="text" name="auteur_l['+(i-1)+']" /></td><td style="white_space:nowrap" width="102"><span style="font-weight:bold">Author&nbsp;'+i+'&nbsp;First&nbsp;Name&nbsp;Initial:&nbsp;<br /><span style="font-size:80%">(<span style="font-style:italic" >i.e.</span> JP)</span></span></td><td ><input type="text" name="auteur_f['+(i-1)+']" style="width:20px" /></td></tr><tr><td style="white_space:nowrap" width="410" colspan="4"><span style="font-weight:bold">Affiliation:&nbsp;&nbsp;</span><input type="checkbox" name="affiliation1['+(i-1)+']" value="ok"/>1&nbsp;<input type="checkbox" name="affiliation2['+(i-1)+']" value="ok"/>2&nbsp;<input type="checkbox" name="affiliation3['+(i-1)+']" value="ok"/>3&nbsp;<input type="checkbox" name="affiliation4['+(i-1)+']" value="ok"/>4&nbsp;<input type="checkbox" name="affiliation5['+(i-1)+']" value="ok"/>5&nbsp;<input type="checkbox" name="affiliation6['+(i-1)+']" value="ok"/>6</td></tr><tr><td colspan="3"><input type="radio" name="presenting" value="'+i+'" /><span style="font-weight:bold;">Presenting author (who must be registered and only presenting this abstract)</span></td></tr></table></span>');	
		document.getElementById('bouton'+i).innerHTML += (i < 15) ? '<br /><span id="bouton'+i2+'"><table width="100%" border="0"><tr><td align="center"><input type="hidden" name="nbr_champs" value="'+i+'"><span style="cursor:pointer; border:1px solid; padding:3px" onClick="javascript:createChamp('+i2+')">Add a co-author</span></td></tr></table></span>' : '<input type="hidden" name="nbr_champs" value="'+i+'">';
	}