/**
 *
 * Copyright (c) 2007 Tom Deater (http://www.tomdeater.com)
 * Licensed under the MIT License:
 * http://www.opensource.org/licenses/mit-license.php
 * 
 */
 
/**
 * equalizes the heights of all elements in a jQuery collection
 * thanks to John Resig for optimizing this!
 * usage: $("#col1, #col2, #col3").equalizeCols();
 */
 
$.fn.equalizeCols = function(spostamento){
	var height = 0,
		reset = $.browser.msie ? "1%" : "auto";

	
	$(this).css("height", reset);
	
	$(this).each(function() {
		height = Math.max(height, this.offsetHeight);
	});
	height+=spostamento;
	
	$(this).css("height", height);
	
	$(this).each(function() {
		var h = this.offsetHeight;
		if (h > height) {
			$(this).css("height", height - (h - height));
		};
	});
	return this;
};