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; 
}