window.name='dkpromo_principal';

function popup(page,largeur,hauteur,options)
{
var top=(screen.height-hauteur)/2;
var left=(screen.width-largeur)/2;
window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+",outerwidth="+ largeur +"px,outerheight="+ hauteur +"px,screenX=5,screenY=5,"+options);
}

function efface(form,nom_champ,valeur_champ)
{
eval ( that = window.document [form] [nom_champ]);
if ( that.value == valeur_champ )
{
that.value = '';
}
else return false;
}