var g_startseite = new Image(); g_startseite.src = "img/menu/startseite_.gif";  var g_unternehmen = new Image(); g_unternehmen.src = "img/menu/unternehmen_.gif";  var g_produkte = new Image(); g_produkte.src = "img/menu/produkte_.gif";  var g_kontakt = new Image(); g_kontakt.src = "img/menu/kontakt_.gif";  var g_impressum = new Image(); g_impressum.src = "img/menu/impressum_.gif";  



function imgOn(imgName)
{
  if( document.images )
  {
  	//alert( eval( "g_" + imgName + ".src" ) );
	//alert( imgName );
    document[imgName].src = eval( "g_" + imgName + ".src" );
  }
}
         

         
function imgOff(imgName)
{
  if( document.images )
  {
    document[imgName].src = "img/menu/" + imgName + ".gif";
  }
}