function ComputeUpperRub()
{
  //Current Url
	Query = window.location.href.substring(0)

  //Current Upper Rub
	posrub = Query.search('rub')
	if (posrub != -1)
	{
	    rub= Query.substring(posrub+3,posrub+4) 
	} else {
	    rub="1"
	}
	
  //Current Upper Lang
	Query = window.location.href.substring(posrub)

	posLang = Query.search('_')
	if (posLang != -1)
	{
	    Lang= Query.substring(posLang+1,posLang+3) 
	} else {
	    Lang="fr"
	}

  //Upper Rub will be accessible only for sub-rubs...
	if (posLang > 4)
	{
	    var UpperRub = "rub" + rub + "_" + Lang + ".htm";
	} else {
	    var UpperRub = "0"
	}
	
	return UpperRub;
}

document.write("<center><a href='javascript:history.back(-1)'><img alt=Back border=0 height=20 width=20 src=images/back.gif></a>")
document.write("&nbsp;")

var UpperRub = ComputeUpperRub()

if (UpperRub!= "0")
{
  document.write("<a href=" + UpperRub + "><img alt=Up border=0 height=20 width=20 src=images/up.gif></a>")
}

document.write("</center>")