function carte(){
var thisDate = new Date();
if(thisDate.getHours()<=3 || thisDate.getHours()>=20){var temps = "nuit"}
if(thisDate.getHours()>=4 && thisDate.getHours()<=19){var temps = "jour"}
document.getElementById("traffic").innerHTML =  '<a href="http://www.quebec511.gouv.qc.ca/fr/cameras/montreal/index.asp"><img src="../img/traffic_'+temps+'.jpg" border="no" alt="traffic" /></a>'
}