function DoMenu(iTab, iLab)
{
	for (i=0; i<8; i++)
  {
		name = "t" + i;
		S = document[name].src;
		pos = S.lastIndexOf("-");
		if (pos >= 0)
		{
			S = S.substring(0, pos);
			document[name].src = S + ".jpg";
		}
	}
  if (iTab >= 0)
  {
		name = "t" + iTab;
		S = document[name].src;
		pos = S.lastIndexOf(".");
		if (pos >= 0)
		{
			S = S.substring(0, pos);
    	document[name].src = S + "-over.jpg";
		}
  }
	if (iLab >= 0)
	{
		document.getElementById("n" + iLab).style.color = "#ffffff";
	}
}