var defilement_gauche=0;
var defilement_haut=0;

function EnregistrerDefilements()
{
		var xhr_object = null; 
     	if(window.XMLHttpRequest)
   		{ // Firefox 
      		xhr_object = new XMLHttpRequest();
   		}
   		else if(window.ActiveXObject)
   		{ // Internet Explorer 
      		xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
   		} 
   		else
   		{ 
   			// XMLHttpRequest non supporté par le navigateur on ne fait rien
      		return; 
   		}
		xhr_object.open('POST','RequeteHTTP_XMLPositionsDefilements.php',true); 
		xhr_object.onreadystatechange = function(){
		if(xhr_object.readyState == 4)
		{
			eval(xhr_object.responseText);
		};
	}		 
	var data =""; 
		
	if(document.all)
	{
		if(document.compatMode=="CSS1Compat")
		{
			data+='posX='+document.body.parentNode.scrollLeft;
			data+='&posY='+document.body.parentNode.scrollTop;
		}
		else
		{
			data+='posX='+document.body.scrollLeft;
			data+='&posY='+document.body.scrollTop;
		};
	}
	else
	{
		data+='posX='+window.scrollX;
		data+='&posY='+window.scrollY;
	};
	xhr_object.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); 
	xhr_object.send(data);
};