(function($) {
	$.fn.equalizeCols = function(){
	  var elementNum = 0;
		var height = 0,
			reset = $.browser.msie ? "1%" : "auto";
		return this
			.css("height", reset)
			.each(function() {
				height = Math.max(height, this.offsetHeight);
			})
			.css("height", height)
			.each(function() {
				var h = this.offsetHeight;
				if (h > height) {
				  $(this).css("height", height - (h - height));
				};
			});
	};
})(jQuery);
//$("#mainbox, #sidebox").equalizeCols();