var dt = new Date();
var sec = dt.getSeconds();
if (sec>0 & sec<=15)  {document.write('<img src="../images/headers/header_premier1.gif" border="0" alt="premier">');}
else if (sec>15 & sec<=30) {document.write('<img src="../images/headers/header_premier2.gif" border="0" alt="premier">');}
else if (sec>30 & sec<=45) {document.write('<img src="../images/headers/header_premier3.gif" border="0" alt="premier">');}
else {document.write('<img src="../images/headers/header_premier4.gif" border="0" alt="premier">');}