jQuery.fn.equalHeights = function(options) {
	var defaults = {
			perLine : false
	};
	options = $.extend(defaults, options);
	if (options.perLine) {
			var count_items = this.size(),
			items_line = new Array(),
			items = this,
			round = Math.round(parseInt(count_items, 0) / parseInt(options.perLine, 0)),
			steps = (parseInt(count_items, 0) / parseInt(options.perLine, 0)) > parseInt(round, 0) ? parseInt(round, 0) + 1 : round;
			for (var i = 0; i < parseInt(steps, 0); i++) {
				var start = i * parseInt(options.perLine, 0);
				items_line[i] = new Array();
				for (var j = 0; j < parseInt(options.perLine, 0); j++) {
					if (items[j + parseInt(start, 0)] != undefined)
						items_line[i].push(items[j + parseInt(start, 0)]);
				}
			}
			$.each(items_line, function(ind, val){
				var array = new Array ();
				$.each(val, function() {
					array.push(jQuery(this).height());
				});
				var max = Math.max.apply(null, array);
				$.each(val, function(index, value) {
				$(this).css('height', max);
				});
			});
	} else {
		return this.height(Math.max.apply(null,
			this.map(function() {
				return jQuery(this).height()
			}).get()
		));
	}
};