/*!-------------------------------------------------------------------- 
 * JQuery Plugin: "EqualHeights"
 * by:	Scott Jehl, Todd Parker, Maggie Costello Wachs (http://www.filamentgroup.com)
 *
 * Copyright (c) 2008 Filament Group
 * Licensed under GPL (http://www.opensource.org/licenses/gpl-license.php)
 *
 * Description: Compares the heights or widths of the top-level children of a provided element 
 		and sets their min-height to the tallest height (or width to widest width). Sets in em units 
 		by default if pxToEm() method is available.
 * Dependencies: jQuery library, pxToEm method	(article: 
		http://www.filamentgroup.com/lab/retaining_scalable_interfaces_with_pixel_to_em_conversion/)							  
 * Usage Example: $(element).equalHeights();
  		Optional: to set min-height in px, pass a true argument: $(element).equalHeights(true);
 * Version: 2.0, 08.01.2008
--------------------------------------------------------------------*/

$.fn.equalHeights = function(px) {
	$(this).each(function(){
		var currentTallest = 0;
		$(this).children().each(function(i){
			if ($(this).height() > currentTallest) { currentTallest = $(this).height(); }
		});
		// if (!px || !Number.prototype.toEm) currentTallest = currentTallest.toEm(); //use ems unless px is specified
		// for ie6, set height since min-height isn't supported
		if ($.browser.msie && $.browser.version == 6.0) { $(this).children().css({'height': currentTallest}); }
		$(this).children().css({'min-height': currentTallest}); 
	});
	return this;
};

/*-------------------------------------------------------------------- 
 * jQuery plugins: toEm() and toPx()
 * by Scott Jehl (scott@filamentgroup.com), http://www.filamentgroup.com
 * Copyright (c) Filament Group
 * Dual licensed under the MIT (filamentgroup.com/examples/mit-license.txt) and GPL (filamentgroup.com/examples/gpl-license.txt) licenses.
 * Article: http://www.filamentgroup.com/lab/update_jquery_plugin_for_retaining_scalable_interfaces_with_pixel_to_em_con/
 * Options:  	 								
 		scope: string or jQuery selector for font-size scoping		  
 * Usage Example: $(myPixelValue).toEm(); or $(myEmValue).toPx();
--------------------------------------------------------------------*/

$.fn.toEm = function(settings){
	settings = jQuery.extend({
		scope: 'body'
	}, settings);
	var that = parseInt(this[0],10);
	var scopeTest = jQuery('<div style="display: none; font-size: 1em; margin: 0; padding:0; height: auto; line-height: 1; border:0;">&nbsp;</div>').appendTo(settings.scope);
	var scopeVal = scopeTest.height();
	scopeTest.remove();
	return (that / scopeVal).toFixed(8) + 'em';
};


$.fn.toPx = function(settings){
	settings = jQuery.extend({
		scope: 'body'
	}, settings);
	var that = parseFloat(this[0]);
	var scopeTest = jQuery('<div style="display: none; font-size: 1em; margin: 0; padding:0; height: auto; line-height: 1; border:0;">&nbsp;</div>').appendTo(settings.scope);
	var scopeVal = scopeTest.height();
	scopeTest.remove();
	return Math.round(that * scopeVal) + 'px';
};