/*
 * Supersubs v0.2b - jQuery plugin
 * Copyright (c) 2008 Joel Birch
 *
 * Dual licensed under the MIT and GPL licenses:
 * 	http://www.opensource.org/licenses/mit-license.php
 * 	http://www.gnu.org/licenses/gpl.html
 *
 *
 * This plugin automatically adjusts submenu widths of suckerfish-style menus to that of
 * their longest list item children. If you use this, please expect bugs and report them
 * to the jQuery Google Group with the word 'Superfish' in the subject line.
 *
 */

;(function($){ // $ will refer to jQuery within this closure

	$.fn.supersubs = function(options){
		var opts = $.extend({}, $.fn.supersubs.defaults, options);
		// return original object to support chaining
		return this.each(function() {
			// cache selections
			var $$ = $(this);
			// support metadata
			var o = $.meta ? $.extend({}, opts, $$.data()) : opts;
			// get the font size of menu.
			// .css('fontSize') returns various results cross-browser, so measure an em dash instead
			var fontsize = $('<li id="menu-fontsize">&#8212;</li>').css({
				'padding' : 0,
				'position' : 'absolute',
				'top' : '-999em',
				'width' : '100%'
			}).appendTo($$).width(); //clientWidth is faster, but was incorrect here
			// remove em dash
			$('#menu-fontsize').remove();
			// cache all ul elements
			$ULs = $$.find('ul');
			// loop through each ul in menu
            var $maxWidth = 0;
			$ULs.each(function(i) {
				// cache this ul
				var $ul = $(this);

				var $LIs = $ul.children('li');

                $LIs.each(function(i){
                    var $t = $(this);
                    var $a = $t.children('a:first-child');
                    $a.css({'width':'100%'});
                    $maxWidth = Math.max($maxWidth, $a.width());
                });

                $maxWidth += o.extraWidth;

                $ul.css({'width':$maxWidth + 'px'});
                $LIs.each(function(i){
                    var $t = $(this);
                    $t.children('a').css({'width' : Math.min(opts.maxWidth, Math.max($maxWidth, opts.minWidth)) + 'px' });
                });

                $maxWidth = 0;
			});
			
		});
	};
	// expose defaults
	$.fn.supersubs.defaults = {
		minWidth		: 9,		// requires em unit.
		maxWidth		: 25,		// requires em unit.
		extraWidth		: 0			// extra width can ensure lines don't sometimes turn over due to slight browser differences in how they round-off values
	};
	
})(jQuery); // plugin code ends