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327 lines
11 KiB
327 lines
11 KiB
2 years ago
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// Title: Tigra Menu
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// Description: Free JavaScript Menu Navigation
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// URL: http://www.javascript-menu.com/
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// Version: 2.1 (commented source)
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// Date: 06/26/2007
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// Tech. Support: http://www.softcomplex.com/forum/forumdisplay_29/
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// Notes: This script is free. Visit official site for further details.
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// --------------------------------------------------------------------------------
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// global collection containing all menus on current page
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var A_MENUS = [];
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// --------------------------------------------------------------------------------
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// menu class
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function menu(a_items, a_tpl) {
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// browser check
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if (!document.body || !document.body.style)
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return;
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// store items structure
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this.a_config = a_items;
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// store template structure
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this.a_tpl = a_tpl;
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// get menu id
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this.n_id = A_MENUS.length;
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// declare collections
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this.a_index = [];
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this.a_children = [];
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// assigh methods and event handlers
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this.expand = menu_expand;
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this.collapse = menu_collapse;
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this.onclick = menu_onclick;
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this.onmouseout = menu_onmouseout;
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this.onmouseover = menu_onmouseover;
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this.onmousedown = menu_onmousedown;
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// default level scope description structure
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this.a_tpl_def = {
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'block_top': 16,
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'block_left': 16,
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'top': 20,
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'left': 4,
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'width': 120,
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'height': 22,
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'hide_delay': 0,
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'expd_delay': 0,
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'css': {
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'inner': '',
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'outer': ''
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}
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};
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// assign methods and properties required to imulate parent item
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this.getprop = function (s_key) {
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return this.a_tpl_def[s_key];
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};
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this.o_root = this;
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this.n_depth = -1;
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this.n_x = 0;
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this.n_y = 0;
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// init items recursively
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for (n_order = 0; n_order < a_items.length; n_order++)
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new menu_item(this, n_order);
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// register self in global collection
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A_MENUS[this.n_id] = this;
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// make root level visible
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for (var n_order = 0; n_order < this.a_children.length; n_order++)
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this.a_children[n_order].e_oelement.style.visibility = 'visible';
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}
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// --------------------------------------------------------------------------------
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function menu_collapse(n_id) {
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// cancel item open delay
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clearTimeout(this.o_showtimer);
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// by default collapse to root level
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var n_tolevel = (n_id ? this.a_index[n_id].n_depth : 0);
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// hide all items over the level specified
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for (n_id = 0; n_id < this.a_index.length; n_id++) {
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var o_curritem = this.a_index[n_id];
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if (o_curritem.n_depth > n_tolevel && o_curritem.b_visible) {
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o_curritem.e_oelement.style.visibility = 'hidden';
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o_curritem.b_visible = false;
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}
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}
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// reset current item if mouse has gone out of items
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if (!n_id)
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this.o_current = null;
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}
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// --------------------------------------------------------------------------------
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function menu_expand(n_id) {
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// expand only when mouse is over some menu item
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if (this.o_hidetimer)
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return;
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// lookup current item
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var o_item = this.a_index[n_id];
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// close previously opened items
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if (this.o_current && this.o_current.n_depth >= o_item.n_depth)
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this.collapse(o_item.n_id);
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this.o_current = o_item;
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// exit if there are no children to open
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if (!o_item.a_children)
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return;
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// show direct child items
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for (var n_order = 0; n_order < o_item.a_children.length; n_order++) {
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var o_curritem = o_item.a_children[n_order];
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o_curritem.e_oelement.style.visibility = 'visible';
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o_curritem.b_visible = true;
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}
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}
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// --------------------------------------------------------------------------------
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function menu_onclick(n_id) {
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var o_item = this.a_index[n_id];
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var s_link = o_item.a_config[1];
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if (!s_link)
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return true;
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if (String(s_link).toLowerCase().indexOf('javascript:') == 0)
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return eval(s_link);
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if (o_item.a_config[2] && o_item.a_config[2]['tw'])
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window.open(s_link, o_item.a_config[2]['tw']);
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else
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window.location = s_link;
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return true;
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}
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// --------------------------------------------------------------------------------
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function menu_onmouseout(n_id) {
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// lookup new item's object
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var o_item = this.a_index[n_id];
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// apply rollout
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o_item.e_oelement.className = o_item.getstyle(0, 0);
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o_item.e_ielement.className = o_item.getstyle(1, 0);
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// update status line
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o_item.upstatus(7);
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// run mouseover timer
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this.o_hidetimer = setTimeout('A_MENUS[' + this.n_id + '].collapse();',
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o_item.getprop('hide_delay'));
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}
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// --------------------------------------------------------------------------------
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function menu_onmouseover(n_id) {
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// cancel mouseoute menu close and item open delay
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clearTimeout(this.o_hidetimer);
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this.o_hidetimer = null;
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clearTimeout(this.o_showtimer);
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// lookup new item's object
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var o_item = this.a_index[n_id];
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// update status line
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o_item.upstatus();
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// apply rollover
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o_item.e_oelement.className = o_item.getstyle(0, 1);
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o_item.e_ielement.className = o_item.getstyle(1, 1);
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// if onclick open is set then no more actions required
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if (o_item.getprop('expd_delay') < 0)
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return;
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// run expand timer
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this.o_showtimer = setTimeout('A_MENUS[' + this.n_id + '].expand(' + n_id + ');',
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o_item.getprop('expd_delay'));
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}
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// --------------------------------------------------------------------------------
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// called when mouse button is pressed on menu item
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// --------------------------------------------------------------------------------
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function menu_onmousedown(n_id) {
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// lookup new item's object
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var o_item = this.a_index[n_id];
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// apply mouse down style
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o_item.e_oelement.className = o_item.getstyle(0, 2);
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o_item.e_ielement.className = o_item.getstyle(1, 2);
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this.expand(n_id);
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}
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// --------------------------------------------------------------------------------
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// menu item Class
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function menu_item(o_parent, n_order) {
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// store parameters passed to the constructor
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this.n_depth = o_parent.n_depth + 1;
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this.a_config = o_parent.a_config[n_order + (this.n_depth ? 3 : 0)];
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// return if required parameters are missing
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if (!this.a_config)
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return;
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// store info from parent item
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this.o_root = o_parent.o_root;
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this.o_parent = o_parent;
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this.n_order = n_order;
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// register in global and parent's collections
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this.n_id = this.o_root.a_index.length;
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this.o_root.a_index[this.n_id] = this;
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o_parent.a_children[n_order] = this;
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// calculate item's coordinates
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var o_root = this.o_root,
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a_tpl = this.o_root.a_tpl;
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// assign methods
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this.getprop = mitem_getprop;
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this.getstyle = mitem_getstyle;
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this.upstatus = mitem_upstatus;
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this.n_x = n_order
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? o_parent.a_children[n_order - 1].n_x + this.getprop('left')
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: o_parent.n_x + this.getprop('block_left');
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this.n_y = n_order
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? o_parent.a_children[n_order - 1].n_y + this.getprop('top')
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: o_parent.n_y + this.getprop('block_top');
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// generate item's HMTL
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document.write(
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'<div id="e', o_root.n_id, '_', this.n_id, 'o" class="', this.getstyle(0, 0), '"',
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(this.a_config[2] && this.a_config[2]['tt'] ? ' title="' + this.a_config[2]['tt'] + '"' : ''),
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' style="position:absolute;top: ', this.n_y, 'px;left:', this.n_x, 'px;width:',
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this.getprop('width'), 'px;height:', this.getprop('height'), 'px;visibility:hidden;',
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' z-index: ', this.n_depth, ';cursor:', (this.a_config[1] ? 'pointer' : 'default'), '" ',
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'onclick="return A_MENUS[', o_root.n_id, '].onclick(', this.n_id,
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');" onmouseout="A_MENUS[', o_root.n_id, '].onmouseout(', this.n_id,
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');" onmouseover="A_MENUS[', o_root.n_id, '].onmouseover(',
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this.n_id, ');" onmousedown="A_MENUS[', o_root.n_id, '].onmousedown(',
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this.n_id, ');"><div id="e', o_root.n_id, '_',
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this.n_id, 'i" class="', this.getstyle(1, 0), '">',
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this.a_config[0], "</div></div>"
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);
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this.e_ielement = document.getElementById('e' + o_root.n_id + '_' + this.n_id + 'i');
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this.e_oelement = document.getElementById('e' + o_root.n_id + '_' + this.n_id + 'o');
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this.b_visible = !this.n_depth;
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// no more initialization if leaf
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if (this.a_config.length < 4)
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return;
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// node specific methods and properties
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this.a_children = [];
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// init downline recursively
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for (var n_order = 0; n_order < this.a_config.length - 3; n_order++)
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new menu_item(this, n_order);
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}
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// --------------------------------------------------------------------------------
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// reads property from template file, inherits from parent level if not found
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// ------------------------------------------------------------------------------------------
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function mitem_getprop(s_key) {
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// check if value is defined for current level
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var s_value = null,
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a_level = this.o_root.a_tpl[this.n_depth];
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// return value if explicitly defined
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if (a_level)
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s_value = a_level[s_key];
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// request recursively from parent levels if not defined
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return (s_value == null ? this.o_parent.getprop(s_key) : s_value);
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}
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// --------------------------------------------------------------------------------
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// reads property from template file, inherits from parent level if not found
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// ------------------------------------------------------------------------------------------
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function mitem_getstyle(n_pos, n_state) {
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var a_css = this.getprop('css');
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var a_oclass = a_css[n_pos ? 'inner' : 'outer'];
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// same class for all states
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if (typeof (a_oclass) == 'string')
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return a_oclass;
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// inherit class from previous state if not explicitly defined
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for (var n_currst = n_state; n_currst >= 0; n_currst--)
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if (a_oclass[n_currst])
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return a_oclass[n_currst];
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}
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// ------------------------------------------------------------------------------------------
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// updates status bar message of the browser
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// ------------------------------------------------------------------------------------------
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function mitem_upstatus(b_clear) {
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window.setTimeout("window.status=unescape('" + (b_clear
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? ''
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: (this.a_config[2] && this.a_config[2]['sb']
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? escape(this.a_config[2]['sb'])
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: escape(this.a_config[0]) + (this.a_config[1]
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? ' (' + escape(this.a_config[1]) + ')'
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: ''))) + "')", 10);
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}
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// --------------------------------------------------------------------------------
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// that's all folks
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