/**
 * Equal Heights Plugin
 * Equalize the heights of elements. Great for columns or any elements
 * that need to be the same size (floats, etc).
 * 
 * Version 1.0
 * Updated 12/10/2008
 *
 * Copyright (c) 2008 Rob Glazebrook (cssnewbie.com) 
 *
 * Usage: $(object).equalHeights([minHeight], [maxHeight]);
 * 
 * Example 1: $(".cols").equalHeights(); Sets all columns to the same height.
 * Example 2: $(".cols").equalHeights(400); Sets all cols to at least 400px tall.
 * Example 3: $(".cols").equalHeights(100,300); Cols are at least 100 but no more
 * than 300 pixels tall. Elements with too much content will gain a scrollbar.
 * 


(function($) {
	$.fn.equalHeights = function(minHeight, maxHeight) {
		tallest = (minHeight) ? minHeight : 0;
		this.each(function() {
			if($(this).height() > tallest) {
				tallest = $(this).height();
			}
		});
		if((maxHeight) && tallest > maxHeight) tallest = maxHeight;
		return this.each(function() {
			$(this).height(tallest).css("overflow","auto");
		});
	}
})(jQuery);
 */

jQuery.fn.equalHeights=function() {
var maxHeight=0;
this.each(function(){
 if (this.offsetHeight>maxHeight) {maxHeight=this.offsetHeight;}
});
this.each(function(){
 $(this).height(maxHeight + "px");
 if (this.offsetHeight>maxHeight) {
  $(this).height((maxHeight-(this.offsetHeight-maxHeight))+"px");
 }
});
};

/*-------------------------------------------------------------------- 
 * javascript method: "pxToEm"
 * by:
   Scott Jehl (scott@filamentgroup.com) 
   Maggie Wachs (maggie@filamentgroup.com)
   http://www.filamentgroup.com
 *
 * Copyright (c) 2008 Filament Group
 * Dual licensed under the MIT (filamentgroup.com/examples/mit-license.txt) and GPL (filamentgroup.com/examples/gpl-license.txt) licenses.
 *
 * Description: Extends the native Number and String objects with pxToEm method. pxToEm converts a pixel value to ems depending on inherited font size.  
 * Article: http://www.filamentgroup.com/lab/retaining_scalable_interfaces_with_pixel_to_em_conversion/
 * Demo: http://www.filamentgroup.com/examples/pxToEm/	 	
 *							
 * Options:  	 								
 		scope: string or jQuery selector for font-size scoping
 		reverse: Boolean, true reverses the conversion to em-px
 * Dependencies: jQuery library						  
 * Usage Example: myPixelValue.pxToEm(); or myPixelValue.pxToEm({'scope':'#navigation', reverse: true});
 *
 * Version: 2.0, 08.01.2008 
 * Changelog:
 *		08.02.2007 initial Version 1.0
 *		08.01.2008 - fixed font-size calculation for IE
--------------------------------------------------------------------*/

Number.prototype.pxToEm = String.prototype.pxToEm = function(settings){
	//set defaults
	settings = jQuery.extend({
		scope: 'body',
		reverse: false
	}, settings);
	
	var pxVal = (this == '') ? 0 : parseFloat(this);
	var scopeVal;
	var getWindowWidth = function(){
		var de = document.documentElement;
		return self.innerWidth || (de && de.clientWidth) || document.body.clientWidth;
	};	
	
	/* When a percentage-based font-size is set on the body, IE returns that percent of the window width as the font-size. 
		For example, if the body font-size is 62.5% and the window width is 1000px, IE will return 625px as the font-size. 	
		When this happens, we calculate the correct body font-size (%) and multiply it by 16 (the standard browser font size) 
		to get an accurate em value. */
				
	if (settings.scope == 'body' && $.browser.msie && (parseFloat($('body').css('font-size')) / getWindowWidth()).toFixed(1) > 0.0) {
		var calcFontSize = function(){		
			return (parseFloat($('body').css('font-size'))/getWindowWidth()).toFixed(3) * 16;
		};
		scopeVal = calcFontSize();
	}
	else { scopeVal = parseFloat(jQuery(settings.scope).css("font-size")); };
			
	var result = (settings.reverse == true) ? (pxVal * scopeVal).toFixed(2) + 'px' : (pxVal / scopeVal).toFixed(2) + 'em';
	return result;
};