function w_open (url)
{
	wn = 'wname' + Math.round (Math.random () * 10000);
	settings = 'toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes,resizable=yes,left=0,top=0,width=' +screen.availWidth +',height=' +screen.availHeight +'';
	openedWindow = window.open (url, wn, settings);
	if (openedWindow.opener == null) openedWindow.opener = self;
	openedWindow.focus();
}