function strTrim(chaine) 
{
 var sortie = chaine;
 var car = sortie.substring(0,1);
 while ( car == " " )
 { 
  sortie = sortie.substring(1,sortie.length);
  car = sortie.substring(0,1);
 }
 car = sortie.substring(sortie.length-1,sortie.length);
 while ( car == " " ) 
 { 
  sortie = sortie.substring(0,sortie.length-1);
  car = sortie.substring(sortie.length-1,sortie.length);
 }
 return sortie; 
}

function affform(form) 
{ 

 if(form.aide.checked) 
  { 
	  document.getElementById("lig0").style.display="";
	  document.getElementById("lig1").style.display="";
  document.getElementById("lig2").style.display="";
  }
 else
  {
	  document.getElementById("lig0").style.display="none";
	  document.getElementById("lig1").style.display="none";
  document.getElementById("lig2").style.display="none";
  }
}