// 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'        : 25,




		'left'       : 0,




		'width'      : 120,




		'height'     : 35,




		'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