var lastnode=null;
var listnodes = null;

function is_exp(n) {
  if (n==null) return false;
  return ((n.className=='exp') || (n.className=='exp_active'));
}
function is_col(n) {
  if (n==null) return false;
  return ((n.className=='col') || (n.className=='col_active'));
}
function is_basic(n) {
  if (n==null) return false;
  return ((n.className=='basic') || (n.className=='basic_active'));
}
function is_list_node(n) {
  if (n==null) return false;
  if (n.className==null) return false;
  if ( (is_exp(n)) || 
       (is_col(n)) ||
       (is_basic(n)) )
   return true; else return false;
}
function getsub (li) {
  if (li.childNodes.length==0) return null;
  for (var c = 0; c < li.childNodes.length; c++)
    if ( (li.childNodes[c].className == 'sub') || (li.childNodes[c].className == 'subexp') ) 
	  return li.childNodes[c];
}

function onClickHandler (evt) {
if (lastnode==null) 
{
listnodes = document.getElementsByTagName('li');
lastnode=listnodes;
temp=listnodes;
}
  var target = evt ? evt.target : event.srcElement;
  if (!is_list_node(target)) return;
  toggle(target);
  set_lastnode(target);
}
function setSubClass(node,name) {
  sub = getsub(node);
  if (sub==null) return;
  sub.className=name;  
}
function toggle(target) {
  if (!is_list_node(target)) return;
    if (is_col(target)) {
      target.className='exp';
      setSubClass(target,'sub');
      //      getsub(target).className='sub';
    }
    else if (is_exp(target)) {
      target.className='col';
      setSubClass(target,'subexp');
      //      getsub(target).className='subexp';
    }
 
}

function showCurrentDate(text)
{
	var dayarray = new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
	var montharray = new Array("January","February","March","April","May","June","July","August","September","October","November","December");

	var themelib = new Date();
	
	var seconds = themelib.getSeconds();
	var minutes = themelib.getMinutes();
	var hours = themelib.getHours();
	var day = themelib.getDay();
	var month = themelib.getMonth();
	var daym = themelib.getDate();
	var year = themelib.getFullYear();

	if (daym < 10)
		daym = "0" + daym;
	
	document.write(hours+":"+minutes+":"+seconds+" ",dayarray[day] + ", " + montharray[month] + " " + daym + ", " + year);
}

document.onclick = onClickHandler;