function titre(img)
{
document.write('');
document.write(' ');
document.write(' | | ');
document.write('  | ');
document.write('
');
document.write('
');
document.write('
');
}
function renvoi()
{
document.write('');
document.write(' ');
document.write(' | Haut |  | ');
document.write('
');
document.write('
');
}
function ancre()
{
document.write('');
}
function titreStr(str)
{
document.write('');
document.write(' ');
document.write(' | | ');
document.write(' ' + str + ' | ');
document.write('
');
document.write('
');
document.write('
');
}