var A_MENUS=[];

function menu(a_items,a_tpl)
{
	if(!document.body||!document.body.style)
		return;
	
	this.a_config=a_items;
	this.a_tpl=a_tpl;
	
	this.n_id=A_MENUS.length;
	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.onmousedown=menu_onmousedown;
	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);
	
	A_MENUS[this.n_id]=this;
	
	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)
{
	clearTimeout(this.o_showtimer);

	var n_tolevel=(n_id?this.a_index[n_id].n_depth:0);

	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;
		}
	}
	
	if(!n_id)
	this.o_current=null;
}


function menu_expand(n_id)
{
	if(this.o_hidetimer)
		return;
	
	var o_item=this.a_index[n_id];
	
	if(this.o_current&&this.o_current.n_depth>=o_item.n_depth)
		this.collapse(o_item.n_id);
	
	this.o_current=o_item;
	
	if(!o_item.a_children)
		return;
	
	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)
{
	return Boolean(this.a_index[n_id].a_config[1]);
}


function menu_onmouseout(n_id)
{
	var o_item=this.a_index[n_id];
	o_item.e_oelement.className=o_item.getstyle(0,0);
	o_item.e_ielement.className=o_item.getstyle(1,0);
	o_item.upstatus(7);
	
	this.o_hidetimer=setTimeout('A_MENUS['+this.n_id+'].collapse();',o_item.getprop('hide_delay'));
}


function menu_onmouseover(n_id)
{
	clearTimeout(this.o_hidetimer);
	this.o_hidetimer=null;
	clearTimeout(this.o_showtimer);
	
	var o_item=this.a_index[n_id];
	
	o_item.upstatus();
	o_item.e_oelement.className=o_item.getstyle(0,1);
	o_item.e_ielement.className=o_item.getstyle(1,1);
	
	if(o_item.getprop('expd_delay')<0)
		return;
	
	this.o_showtimer=setTimeout('A_MENUS['+this.n_id+'].expand('+n_id+');',o_item.getprop('expd_delay'));
}


function menu_onmousedown(n_id)
{
	var o_item=this.a_index[n_id];
	o_item.e_oelement.className=o_item.getstyle(0,2);
	o_item.e_ielement.className=o_item.getstyle(1,2);
	this.expand(n_id);
}

function menu_item(o_parent,n_order)
{
	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.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');


	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;

	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);
}


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];
}


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]
	?''
	:'')))+"')",10);
	
	//('+escape(this.a_config[1])+')
}