function centrage_popup(page,largeur,hauteur,options,target){
	if(target==''){target='_blank';}
	var top=(screen.height-hauteur)/2;
	var left=(screen.width-largeur)/2;
	window.open(page,target,'top='+top+',left='+left+',width='+largeur+',height='+hauteur+','+options);
}

function DoConfirm(msg,url) {
	var ok = confirm(msg);
	if(ok) self.location=url;
}