function WindowCenter(mypage, myname, w, h, scroll, sbars)
{
	if(screen.width == 640)
	{
		if(w >= 300)
		{
			w = w - 100;
			h = h - 100;
		}
	}
	var winl = ((screen.width - w) / 2)-5;
	var wint = ((screen.height - h) / 2)-15;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+sbars+',resizable='+scroll+''
	win = window.open(mypage, myname, winprops);
}

function Barra_status(io, text)
{
   prefix="Bem vindo ao site!";
   if(io == 0)
     window.status = text;
   else
     window.status = prefix;
   return true;
}