function ouvrirPopup(url, w, h) {
	var centerW = (window.screen.width - w) / 2;
	var centerH = (window.screen.height - h) / 2;
	var newWindow = window.open(url, null, 'resizable=0' +
								',width=' + w +
								',height=' + h +
								',left=' + centerW +
								',top=' + centerH);
	newWindow.focus();
	return newWindow;
}

function windowOpener(windowHeight, windowWidth, windowName, windowUri)
{
    var centerWidth = (window.screen.width - windowWidth) / 2;
    var centerHeight = (window.screen.height - windowHeight) / 2;

    newWindow = window.open(windowUri, windowName, 'resizable=0,width=' + windowWidth + 
        ',height=' + windowHeight + 
        ',left=' + centerWidth + 
        ',top=' + centerHeight);

    newWindow.focus();
    return newWindow.name;
}