// popup sans scroll...
function popNS(url, name, width, height) {
    var winLeft = 20 ;
    var winTop = 20 ;
    param = 'directories=no, toolbar=no, location=no, stat­us=no, menubar=no, height=' + height + ', width=' + width + ', top=' + winTop + ', left=' + winLeft ;
	win = window.open(url, name, param) ;
  	win.window.focus() ;
}

function popS(url, name, width, height) {
    var winLeft = (screen.width - width) / 2 ;
    var winTop = (screen.height - height) / 2 ;
    param = 'height=' + height + ', width=' + width + ', top=' + winTop + ', left=' + winLeft ;
	win = window.open(url, name, param) ;
  	win.window.focus() ;
}