function hauteur() 
{

	var banniere=document.getElementById("banniere").offsetHeight; 
	var menu=document.getElementById("menu").offsetHeight; 
	var contenu=document.getElementById("contenu").offsetHeight; 
	var pied=document.getElementById("fondpied").offsetHeight; 

	var total=(banniere+menu+contenu+pied)-463;

	document.getElementById("hautdroite").style.marginTop=total+"px"; 
	document.getElementById("center").style.marginTop=-(52+total)+"px";

}