if (document.body) {  		
    var larg_site = (document.body.clientWidth)
    var haut_site = (document.body.clientHeight)
  }
  else {
    var larg_site = (window.innerWidth)
    var haut_site = (window.innerHeight)
  }
  
  
  
  if ( haut_site < 770)
    haut_site = 770;
    
  if ( larg_site < 1200)
    larg_site = 1200;
    
  if ( document.getElementById('image_sierra') )
  document.getElementById('image_sierra').style.width=larg_site+"px";
  
  if ( document.getElementById('image_sierra') )
  document.getElementById('image_sierra').style.height=haut_site+"px";
    
  document.getElementById('header_marquee_div').style.width=larg_site+"px";
  
  document.getElementById('bloc').style.left=(larg_site-1200)/2+"px";
  
  document.getElementById('barre_header_g').style.width=(larg_site-1200)/2+"px";
  
  document.getElementById('barre_header_d').style.width=(larg_site-1200)/2+"px";
  
  if ( document.getElementById('img_sierra') )
  document.getElementById('img_sierra').style.width  = larg_site+"px";
  
  if ( document.getElementById('img_sierra') )
  document.getElementById('img_sierra').style.height  = haut_site+"px";
  
  document.getElementById('footer').style.width  = larg_site+"px";
  
  document.getElementById('footer').style.top  = haut_site-58+"px";
  
  document.getElementById('bloc_droite').style.height  = haut_site+"px";
  
  document.getElementById('bdh2').style.height  = haut_site+"px";
  
  document.getElementById('bdh4').style.top = haut_site-58+"px";
  
  document.getElementById('footer_indexation').style.top = haut_site-50+"px";
  
  document.getElementById('tfooter').style.top = haut_site-50+"px";
  
  document.getElementById('tfooter2').style.top = haut_site-77+"px";