// Title: Tigra Menu
// Description: Free JavaScript Menu Navigation
// URL: http://www.javascript-menu.com
// Version: 2.1 (commented source)
// Date: 06/26/2007
// Tech. Support: http://www.softcomplex.com/forum/forumdisplay_29
// Notes: This script is free. Visit official site for further details.
// --------------------------------------------------------------------------------
// global collection containing all menus on current page
   var A_MENUS = [];
// --------------------------------------------------------------------------------
// menu class
function 
   menu (a_items, a_tpl) {
// browser check
   if (!document.body || !document.body.style)
     return;
// store items structure
   this.a_config = a_items;
// store template structure
   this.a_tpl = a_tpl;
// get menu id
	
   this.n_id = A_MENUS.length;
// declare collections
   this.a_index = [];
   this.a_children = [];
// assigh methods and event handlers
   this.expand = menu_expand;
   this.collapse = menu_collapse;
   this.onclick = menu_onclick;
   this.onmouseout = menu_onmouseout;
   this.onmouseover = menu_onmouseover;
   this.onmousedown = menu_onmousedown;
// default level scope description structure
   this.a_tpl_def = {
      'block_top'  : 16,
      'block_left' : 16,
      'top'        : 20,

      'left'       : 4,
      'width'      : 120,

      'height'     : 22,
      'hide_delay' : 0,

      'expd_delay' : 0,
      'css'        :
   {
   'inner' : '',
   'outer' : ''
   }
};
// assign methods and properties required to imulate parent item

   this.getprop = function (s_key) {
   return this.a_tpl_def[s_key];
   };
   this.o_root = this;
   this.n_depth = -1;
   this.n_x = 0;
   this.n_y = 0;
// init items recursively
   for (n_order = 0; n_order < a_items.length; n_order++)
   new menu_item(this, n_order);
// register self in global collection
   A_MENUS[this.n_id] = this;
// make root level visible
   for (var n_order = 0; n_order < this.a_children.length; n_order++)
   this.a_children[n_order].e_oelement.style.visibility = 'visible';
}
// --------------------------------------------------------------------------------
   function menu_collapse (n_id) {
// cancel item open delay
   clearTimeout(this.o_showtimer);
// by default collapse to root level
   var n_tolevel = (n_id ? this.a_index[n_id].n_depth : 0);
// hide all items over the level specified
   for (n_id = 0; n_id < this.a_index.length; n_id++) {
   var o_curritem = this.a_index[n_id];
   if (o_curritem.n_depth > n_tolevel && o_curritem.b_visible) {
   o_curritem.e_oelement.style.visibility = 'hidden';
   o_curritem.b_visible = false;
   }
   }
// reset current item if mouse has gone out of items
   if (!n_id)
      this.o_current = null;
}
// --------------------------------------------------------------------------------
  
function menu_expand (n_id) {
// expand only when mouse is over some menu item

   if (this.o_hidetimer)
   return;
// lookup current item
   var o_item = this.a_index[n_id];
// close previously opened items
   if (this.o_current && this.o_current.n_depth >= o_item.n_depth)
   this.collapse(o_item.n_id);
   this.o_current = o_item;
// exit if there are no children to open

   if (!o_item.a_children)
   return;
// show direct child items
   for (var n_order = 0; n_order < o_item.a_children.length; n_order++) {
   var o_curritem = o_item.a_children[n_order];
   o_curritem.e_oelement.style.visibility = 'visible';
   o_curritem.b_visible = true;
   } }
// --------------------------------------------------------------------------------
   function menu_onclick (n_id) {
   var o_item = this.a_index[n_id];
   var s_link = o_item.a_config[1];
   if (!s_link)
   return true;
   if (String(s_link).toLowerCase().indexOf('javascript:') == 0)
   return eval(s_link);
   if (o_item.a_config[2] && o_item.a_config[2]['tw'])
   window.open(s_link, o_item.a_config[2]['tw']);
   else
   window.location = s_link;
   return true;
   }
// --------------------------------------------------------------------------------
   function menu_onmouseout (n_id) {
// lookup new item's object
   var o_item = this.a_index[n_id];
// apply rollout
   o_item.e_oelement.className = o_item.getstyle(0, 0);
   o_item.e_ielement.className = o_item.getstyle(1, 0);
// update status line
   o_item.upstatus(7);
// run mouseover timer
   this.o_hidetimer = setTimeout('A_MENUS['+ this.n_id +'].collapse();',
   o_item.getprop('hide_delay'));
}
// --------------------------------------------------------------------------------
   function menu_onmouseover (n_id) {
// cancel mouseoute menu close and item open delay

   clearTimeout(this.o_hidetimer);
   this.o_hidetimer = null;
   clearTimeout(this.o_showtimer);
// lookup new item's object
   var o_item = this.a_index[n_id];
// update status line
   o_item.upstatus();
// apply rollover
   o_item.e_oelement.className = o_item.getstyle(0, 1);
   o_item.e_ielement.className = o_item.getstyle(1, 1);
// if onclick open is set then no more actions required

   if (o_item.getprop('expd_delay') < 0)
   return;
// run expand timer
   this.o_showtimer = setTimeout('A_MENUS['+ this.n_id +'].expand(' + n_id + ');',
   o_item.getprop('expd_delay'));

}
// --------------------------------------------------------------------------------
// called when mouse button is pressed on menu item
// --------------------------------------------------------------------------------
   function menu_onmousedown (n_id) {
// lookup new item's object
   var o_item = this.a_index[n_id];
// apply mouse down style
   o_item.e_oelement.className = o_item.getstyle(0, 2);
   o_item.e_ielement.className = o_item.getstyle(1, 2);
   this.expand(n_id);
}
// --------------------------------------------------------------------------------
// menu item Class
function
   menu_item (o_parent, n_order) {
// store parameters passed to the constructor

   this.n_depth  = o_parent.n_depth + 1;
   this.a_config = o_parent.a_config[n_order + (this.n_depth ? 3 : 0)];

// return if required parameters are missing

   if (!this.a_config) return;
// store info from parent item

   this.o_root = o_parent.o_root;
   this.o_parent  = o_parent;
   this.n_order   = n_order;
// register in global and parent's collections
   this.n_id = this.o_root.a_index.length;
   this.o_root.a_index[this.n_id] = this;
   o_parent.a_children[n_order] = this;
// calculate item's coordinates
   var o_root = this.o_root,
   a_tpl  = this.o_root.a_tpl;
// assign methods
   this.getprop = mitem_getprop;
   this.getstyle = mitem_getstyle;
   this.upstatus = mitem_upstatus;
   this.n_x = n_order
   ? o_parent.a_children[n_order - 1].n_x + this.getprop('left')
   : o_parent.n_x + this.getprop('block_left');
   this.n_y = n_order
   ? o_parent.a_children[n_order - 1].n_y + this.getprop('top')

   : o_parent.n_y + this.getprop('block_top');
// generate item's HMTL

   document.write (
   '<div id="e', o_root.n_id, '_',	this.n_id, 'o" class="', this.getstyle(0, 0), '"',
   (this.a_config[2] && this.a_config[2]['tt'] ? ' title="' + this.a_config[2]['tt'] + '"' : ''),
   ' style="position:absolute;top: ', this.n_y, 'px;left:', this.n_x, 'px;width:',
   this.getprop('width'), 'px;height:', this.getprop('height'), 'px;visibility:hidden;',
   ' z-index: ', this.n_depth, ';cursor:', (this.a_config[1] ? 'pointer' : 'default'), '" ',
   'onclick="return A_MENUS[', o_root.n_id, '].onclick(', this.n_id,
   ');" onmouseout="A_MENUS[', o_root.n_id, '].onmouseout(', this.n_id,
   ');" onmouseover="A_MENUS[', o_root.n_id, '].onmouseover(',
   this.n_id, ');" onmousedown="A_MENUS[', o_root.n_id, '].onmousedown(',
   this.n_id, ');"><div id="e', o_root.n_id, '_',
   this.n_id, 'i" class="' ,this.getstyle(1, 0), '">',
   this.a_config[0], "</div></div>"
	);
   this.e_ielement = document.getElementById('e' + o_root.n_id + '_' + this.n_id + 'i');
   this.e_oelement = document.getElementById('e' + o_root.n_id + '_' + this.n_id + 'o');
   this.b_visible = !this.n_depth;
// no more initialization if leaf
   if (this.a_config.length < 4)
   return;
// node specific methods and properties

   this.a_children = [];
// init downline recursively
   for (var n_order = 0; n_order < this.a_config.length - 3; n_order++)
   new menu_item(this, n_order);
}
// --------------------------------------------------------------------------------
// reads property from template file, inherits from parent level if not found
// ------------------------------------------------------------------------------------------
  
function mitem_getprop (s_key) {
// check if value is defined for current level
   var s_value = null,
   a_level = this.o_root.a_tpl[this.n_depth];
// return value if explicitly defined
   if (a_level)
   s_value = a_level[s_key];
// request recursively from parent levels if not defined
   return (s_value == null ? this.o_parent.getprop(s_key) : s_value); }
// --------------------------------------------------------------------------------
// reads property from template file, inherits from parent level if not found
// ------------------------------------------------------------------------------------------
   function mitem_getstyle (n_pos, n_state) {
   var a_css = this.getprop('css');
   var a_oclass = a_css[n_pos ? 'inner' : 'outer'];
// same class for all states
   if (typeof(a_oclass) == 'string')
   return a_oclass;
// inherit class from previous state if not explicitly defined

   for (var n_currst = n_state; n_currst >= 0; n_currst--)
   if (a_oclass[n_currst])
   return a_oclass[n_currst]; }
// ------------------------------------------------------------------------------------------
// updates status bar message of the browser
// ------------------------------------------------------------------------------------------
   function mitem_upstatus (b_clear) {
   window.setTimeout("window.status=unescape('" + (b_clear
   ? ''
   : (this.a_config[2] && this.a_config[2]['sb']
   ? escape(this.a_config[2]['sb'])
   : escape(this.a_config[0]) + (this.a_config[1]
   ? ' ('+ escape(this.a_config[1]) + ')'
   : ''))) + "')", 10); }
// --------------------------------------------------------------------------------
// that's all folks