function equal_height() {
	var tallest = 0;
	var arr = ['.pa .midright',
			   '.pb .midright',
			   '.pc .midright',
			   '.pd .midright'];
	$.each(arr, function(index, value) { 
		$(value).height('auto');
		var thisHeight = $(value).height();
		if(thisHeight > tallest) {
			tallest = thisHeight;
		}
	});
	$.each(arr, function(index, value) { 
		$(value).height(tallest);
		$('.rightcol .midright').height((tallest*2)+20);
	});
}