var H24 = 24*60*60*1000; // un jour en millisecondes
var tmois = new Array("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December");
var tsemaine = new Array("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday");
tsemaine[-1]="Sunday";
Date.prototype.afficher = function() {
 var sepa = " ";
 if (arguments.length) sepa = arguments[0];
 return tsemaine[eval(this.getDay()-1)] + ' ' + tmois[this.getMonth()] + ' ' + formate2(this.getDate()) + ', ' + this.getFullYear() +' | '+this.getHours() +':'+formate2(this.getMinutes()) ;
}
function formate2(nombre) {
 return (nombre < 10) ? "0" + nombre : nombre;
}