// Title: tigra menu
// Description: See the demo at url
// URL: http://www.softcomplex.com/products/tigra_menu/
// Version: 2.0 (commented source)
// Date: 04-05-2003 (mm-dd-yyyy)
// Tech. Support: http://www.softcomplex.com/forum/forumdisplay.php?fid=40
// 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'      : 140,
'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) {
// don't go anywhere if item has no link defined
return Boolean(this.a_index[n_id].a_config[1]);
}
// --------------------------------------------------------------------------------
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);
//	this.items[id].switch_style('onmousedown');
}
// --------------------------------------------------------------------------------
// 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 (
'<a id="e' + o_root.n_id + '_'
+ this.n_id +'o" class="' + this.getstyle(0, 0) + '" href="' + this.a_config[1] + '"'
+ (this.a_config[2] && this.a_config[2]['tw'] ? ' target="'
+ this.a_config[2]['tw'] + '"' : '') + ' 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 + ';" '
+ '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></a>\n"
);
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