function setCheckboxes(the_form, pref, do_check)
{

  var elt;
  var theform=document.forms[the_form]
  cont=1;
  elt=theform.elements[pref+cont];
  elt.checked=do_check;

/*  while(typeof(elt=theform.elements[pref+cont]) !='undefined')
  {
    elt.checked=do_check;
    cont++;
  };*/
  for(cont==0 ;cont<=theform.elements.length; cont++)
  {
    if(typeof(elt=theform.elements[pref+cont]) !='undefined')
    {
        elt.checked=do_check;
    }
  };
}

function test()
{
  return confirm('aze');
};

function ConfirmToURL(message, url)
{
	if(confirm(message)) location.href = url;
}

function ValideNum(the_form, element)
{
    var theform=document.forms[the_form];
    if(typeof(theform) !='undefined')
    {
        var elt=theform.elements[element];
        if(typeof(elt) != 'undefined')
        {
            if(!is_numeric(elt.value))
            {
                alert('Vous dever etrer un nombre');
            }
            else
            {
                alert('nb');
            };
        }
        else
        {
            alert('pb elt')
        };
    }
    else
    {
        alert('pb form')
    };
};