var     ns  = (document.layers) ? true : false;                // ns4x
var     dom = (document.getElementById) ? true : false;        // DOM compatible browser (ie6+, ns6+, mozilla...)
var     ie  = (document.all) ? true : false;                   // ie4x

var	imgpath = "/images/";

function	imgOn(n, l)
{
  var im = document.images[n];
  if (im) {
    if (l)
      im.src = imgpath+l+"/"+n+"_on.gif";
    else
      im.src = imgpath+n+"_on.gif";
  }
}

function	imgOff(n, l)
{
  var im = document.images[n];
  if (im)
    {
      if (l)
	im.src = imgpath+l+"/"+n+"_off.gif";
      else
	im.src = imgpath+n+"_off.gif";
    }
}

function        menuCss(id, cls)
{
  if (dom)
    {
      var nm = 'm-'+id;
      
      var m = document.getElementById(nm);
      if (m)
        m.className = cls;
    }
}

function        doLink(id)
{
  if (ie)
    {
      if (document.all[id])
        document.location = document.all[id];
    }
  else if (dom || ns)
    {
      if (document.links[id])
        document.location = document.links[id];
    }
}