div_name="popup";

function popup(fichier,div)
	{
	envoyer(fichier,div);
	if(document.getElementById(div_name).style.visibility == '')
		{
		document.getElementById(div_name).style.visibility = 'hidden';
		}

	if(document.getElementById(div_name).style.visibility == 'hidden')
		{
		px = px - document.getElementById('page').offsetLeft - 150;
		py = py - document.getElementById('page').offsetTop - 190;
		document.getElementById(div_name).style.left = px + 'px';
		document.getElementById(div_name).style.top = py + 'px';
		document.getElementById(div_name).style.visibility = 'visible';
		}
	else
		{
		document.getElementById(div_name).style.visibility = 'hidden';
		}
	}