var defile;// l'element a deplacer 
var psinit = 450; // position horizontale de depart 
var pscrnt = psinit;
function texteDefile() { 
   if (!defile) defile = document.getElementById('logos'); 
   if (defile) { 
	  if(pscrnt < ( - defile.offsetWidth) ){ 
		 pscrnt = psinit; 
				} else { 
		 pscrnt+= -12; // pixel par deplacement 
	  } 
	  defile.style.left = pscrnt+"px"; 
   } 
} 
setInterval("texteDefile()",250); // delai de deplacement