// make all columns equally high
$.fn.equalHeightColumns = function() {
	var tallest = 0;

	$(this).each(function() {
		if ($(this).outerHeight(true) > tallest) {
			tallest = $(this).outerHeight(true);
		}
	});

	$(this).each(function() {
		var diff = 0;
		diff = tallest - $(this).outerHeight(true);
		$(this).height($(this).height() + diff);
	});
};

// call it like this:
$(document).ready(function(){
		//insert code here
		$(".columns").equalHeightColumns();
	});