function change_color(vr) {
 vr1 = "#FFFFFF";
 vr2 = "#FF9900";
 
 document.getElementById('promo').style.color=vr;
 if(vr==vr1){setTimeout('change_color("'+vr2+'")',400)};
 if(vr==vr2){setTimeout('change_color("'+vr1+'")',400)};
 
}