function openWindow(url, name, width, height, posX, posY)
{
  var popWindow=window.open(url,name,'left='+posX+',top='+posY+',width='+width+',height='+height+',scrollbars=yes,menubar=no,status=yes,resizable=yes')
  return popWindow;
}

function showOriginal(url, width, height)
{
	var posX = (screen.width - width) / 2;
	var posY = (screen.height - height) / 2;
	var win_width = width + 40;
	var win_height = height + 30;
	var win = openWindow(url, 'original', win_width, win_height, posX, posY);
}