i_akt											= -1;
aktNavi											= '';

function changeNavi(pic,pfad,pfeil)
  {
  if(JS_enabled)
    {
    if(i_akt != pic)
	  {
	  document.images['navi'+pic].src				= JS_rb+'bilder/layout/navi/'+pfad+'.gif';
      document.images['pfeil'].src				= JS_rb+'bilder/'+pfeil+'.gif';
      }
	}
  }
  
function setNavi(i,pfad)
  {
  if(i_akt >= 0)
    {
	document.images['navi'+i_akt].src			= JS_rb+'bilder/layout/navi/'+aktNavi+'_off.gif';
	}
  aktNavi										= pfad;
  i_akt											= i;
  }
  
  
var gl_browser_height												= 0;
var gl_browser_width												= 0;

var ns4 = (document.layers) ? 1 : 0;
var ie  = (document.all) ? 1 : 0;
var ns6 = (document.getElementById && !document.all) ? 1 : 0;


//------------------------------------------------------------------
// breite und hoehe des browserfensters bestimmen
//------------------------------------------------------------------
function init_browser_height_width()
  {
  iframe_hoehe();
  }