// JavaScript Document
  function show(id)
   {
    var el
	if(el = document.getElementById("sub"+id)){	el.className = (el.className == 'm2')?'m1':'m2';}
	if(el = document.getElementById("arr"+id)){	el.className = (el.className == 'a2')?'a1':'a2';}
   }
   function linkator(id)
   {
   		if (el2 = document.getElementById(id))
			return false;
		else
			return true;
   }