function showhide(val){

  if (nNAV = document.getElementById(val).style){
    
    nNAV.display = (nNAV.display == 'block')? 'none' : 'block';
    
  }
}

function show(val, sh){

  if (nNAV = document.getElementById(val).style){
    
    nNAV.display = sh;
    
  }
}

function hideGroup(){
	group = hideGroup.arguments;
	for(i=0;i<group.length;i++){
		myDiv = document.getElementById(group[i]).style;
		myDiv.display = 'none';
	}
}

function showGroup(){
	group = showGroup.arguments;
	for(i=0;i<group.length;i++){
		myDiv = document.getElementById(group[i]).style;
		myDiv.display = 'block';
	}
}

function fixNav(){
	var arVersion = navigator.appVersion.split("MSIE")
   var version = parseFloat(arVersion[1])
   if ((version <= 6)) 
   {
		group = fixNav.arguments;
		for(i=0;i<group.length;i++){
			myDiv = document.getElementById(group[i]).style;
			myDiv.display = 'none';
		} 
   }
}