function toggle( targetId ){
  if (document.getElementById){
  		target = document.getElementById( targetId );
  			if (target.style.display == "none"){
  				target.style.display = "inline";
  			} else {
  				target.style.display = "none";
  			}
  	}
}
function toggleon( targetId ){
  if (document.getElementById){
  		target = document.getElementById( targetId );
  			if (target.style.display == "none"){
  				target.style.display = "";
  			}
  	}
}
function toggleoff( targetId ){
  if (document.getElementById){
  		target = document.getElementById( targetId );
  			if (target.style.display == ""){
  				target.style.display = "none";
  			}
  	}
}

function go(form){
	var i = form.dest.selectedIndex
	location = form.dest.options[i].value
}

var timer;
function show_nav(){
toggleon('nav');
}
function show_arrow(){
toggleon('arrow');
}