function ShowAbout(lang)
{
	//alert ('type = ' + type + '\n' + 'item = ' + item);
	var taillex;
	var tailley;
	var ntop;
	var nleft;

	var w = 470;
	var h = 310;

	if (navigator.appName=="Microsoft Internet Explorer")
	{
		tailley = screen.height;
		taillex = screen.width;
	}
	else
	{
		tailley = window.screen.height;
		taillex = window.screen.width;
	}

	ntop = (tailley -h)/2;
	nleft = (taillex -w)/2;
	if ( ntop <0 )
		ntop=0;
	if ( nleft <0 )
		nleft=0;

	window.open('about.php?lang='+lang,'','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width='+(w+30)+',height='+(h+30)+',top='+ntop+',left='+nleft);

}