var A_MENUS = [];

function menu (a_items, a_tpl, menucode) {

	this.activemenu = readCookie('menu');
	this.activemenu_parent = readCookie('menu_parent');
	this.activemenuitem = readCookie('menu_item');

	if (!document.body || !document.body.style)
		return;

	this.a_config = a_items;
	this.a_tpl = a_tpl;
	this.n_id = 0;
	this.a_index = [];
	this.a_children = [];

	this.expand      = menu_expand;
	this.collapse    = menu_collapse;

	this.onclick     = menu_onclick;
	this.onmouseout  = menu_onmouseout;
	this.onmouseover = menu_onmouseover;
	this.activestyle = menu_activestyle;
	this.menucode = menucode;

	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' : ''
			}
	};

	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;

	for (n_order = 0; n_order < a_items.length; n_order++)
		new menu_item(this, n_order,menucode);

	A_MENUS[menucode] = this;
	
	for (var n_order = 0; n_order < this.a_children.length; n_order++) {
		if (this.a_children[n_order].e_oelement) this.a_children[n_order].e_oelement.style.display = 'block';
		if (this.a_children[n_order].e_ielement) this.a_children[n_order].e_ielement.style.display = 'inline';
	}

	if (this.activemenu) {
	    this.o_current = this.activemenu;
	}
}

function menu_activestyle(n_id) {
	
	if (n_id) {
	    this.o_current = n_id;
	    var o_item = this.a_index[this.o_current];
    	    o_item.e_oelement.className = 'active_outer';
	    o_item.e_ielement.className = 'active_inner';
	    this.activemenuitem = n_id;
	    createCookie('menu_item',n_id,'0.02');
	}
}

function menu_collapse (n_id) {

	var o_item = this.a_index[n_id];
	
	o_item.expanded = false;
	
	if (!o_item.a_children)
		return;
		
	this.onmouseout(n_id);
		
	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.display = 'none';
		o_curritem.e_ielement.style.display = 'none';
		o_curritem.b_visible = true;
	}

}

function menu_expand (n_id) {

	var o_item = this.a_index[n_id];

	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.display = 'block';
		o_curritem.e_ielement.style.display = 'inline';
		o_curritem.b_visible = true;
	}

	o_item.expanded = true;
	this.o_current = n_id;
}

function menu_onclick (n_id) {
	var result = Boolean(this.a_index[n_id].a_config[1]);	
	var o_item = this.a_index[n_id];
	var previousactive = this.activemenu;

	if (o_item.n_depth==0 || (o_item.a_children && o_item.a_children.length>0)) {
	    
	    if (o_item.n_depth==1) {
		createCookie('menu_parent',o_item.o_parent.n_id,'0.02');
	    } else eraseCookie('menu_parent');
	    
	    createCookie('menu',n_id,'0.02');
	    this.activemenu = n_id;
	    this.onmouseout(previousactive);
	    
	    if (this.o_current!=o_item.o_parent.n_id) {
		this.o_hidetimer = setTimeout('A_MENUS['+ this.menucode+'].collapse('+this.o_current+');',o_item.getprop('hide_delay'));
	    }
	}

	if (!result) {
	    if (o_item.expanded==true) {	
		this.o_hidetimer = setTimeout('A_MENUS['+ this.menucode+'].collapse('+n_id+');',o_item.getprop('hide_delay'));
	    } else {
		this.o_showtimer = setTimeout('A_MENUS['+this.menucode+'].expand(' + n_id + ');',o_item.getprop('exp_delay'));
	    }
	} else {
	    this.activestyle(n_id);
	}
	
	return result;
}

function menu_onmouseout (n_id) {

	if (n_id==this.activemenuitem) return;

	var o_item = this.a_index[n_id];

	if (o_item) {
	    o_item.e_oelement.className = o_item.getstyle(0, 0);
	    o_item.e_ielement.className = o_item.getstyle(1, 0);
	}
}

function menu_onmouseover (n_id) {
	
	if (n_id==this.activemenuitem) {
	    return;
	}
	
	var o_item = this.a_index[n_id];

	if (o_item) {
	    o_item.e_oelement.className = o_item.getstyle(0, 1);
	    o_item.e_ielement.className = o_item.getstyle(1, 1);
	}
}

function menu_item (o_parent, n_order,menucode) {

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

	if (!this.a_config) return;

	this.o_root    = o_parent.o_root;
	this.o_parent  = o_parent;
	this.n_order   = n_order;

	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;

	var o_root = this.o_root;
//		a_tpl  = this.o_root.a_tpl;

	this.getprop  = mitem_getprop;
	this.getstyle = mitem_getstyle;

	this.n_x = this.getprop('block_left');
	
	if (o_parent.n_depth==-1 || o_parent.n_id==this.o_root.activemenu || o_parent.n_id==this.o_root.activemenu_parent) {
	    var style_ovisible = 'display:block;';
	    var style_ivisible = 'display:inline;';
	} else {
	    var style_ovisible = 'display:none;';
	    var style_ivisible = 'display:none;';
	}
	
	if (this.n_id==this.o_root.activemenu || this.n_id==this.o_root.activemenu_parent) this.expanded = true;

	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');

	var innertext = '<a id="e' + menucode + 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:relative;' + style_ovisible + 'left:'
			+ this.n_x+'px; width: '
			+ this.getprop('width') + 'px; height: '
			+ this.getprop('height') + 'px;" '
			+ 'onclick="return A_MENUS['+menucode+'].onclick('
			+ this.n_id + ');" onmouseout="A_MENUS['+menucode+'].onmouseout('
			+ this.n_id + ');" onmouseover="A_MENUS['+menucode+'].onmouseover('
			+ this.n_id + ');"'
			+ '><div  id="e' + menucode + o_root.n_id + '_'
			+ this.n_id +'i" class="' + this.getstyle(1, 0) + '" style="' + style_ivisible + '">'
			+ this.a_config[0] + "</div></a>\n";

	document.write (innertext);
	this.e_ielement = document.getElementById('e' + menucode + o_root.n_id + '_' + this.n_id + 'i');
	this.e_oelement = document.getElementById('e' + menucode + o_root.n_id + '_' + this.n_id + 'o');
	
	if (this.n_id==this.o_root.activemenuitem) this.o_root.onclick(this.o_root.activemenuitem);

	this.b_visible = !this.n_depth;

	if (this.a_config.length < 4)
		return;

	this.a_children = [];

	for (var n_order = 0; n_order < this.a_config.length - 3; n_order++)
		new menu_item(this, n_order, menucode);
}

function mitem_getprop (s_key) {

	var s_value = null,
		a_level = this.o_root.a_tpl[this.n_depth];

	if (a_level)
		s_value = a_level[s_key];

	return (s_value == null ? this.o_parent.getprop(s_key) : s_value);
}

function mitem_getstyle (n_pos, n_state) {

	var a_css = this.getprop('css');
	var a_oclass = a_css[n_pos ? 'inner' : 'outer'];

	if (typeof(a_oclass) == 'string')
		return a_oclass;

	for (var n_currst = n_state; n_currst >= 0; n_currst--)
		if (a_oclass[n_currst])
			return a_oclass[n_currst];
}