// 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'      : 100,


		'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 ? 4 : 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[3] && this.a_config[3]['tw'] ? ' target="'


			+ this.a_config[3]['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('(" +


		 escape(this.a_config[2]) + ")')", 10);


// 		 ")', 10)";


//		 : ''))) +'Link',10);


/*


	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