$(function () {
	var drapes = $('#left, #right'),
		content = $('#content'),
		main = $('#main'),
		height = 0,
		winHeight = 0,
		contentHeight = 0,
		bannerHeight = 0,
		minHeight = 0;
	
	bannerHeight = $('#banner').height();
	winHeight = $(window).height();
	contentHeight = content.height();
	
	minHeight = winHeight - bannerHeight;
	
	if (contentHeight > minHeight) { 
		height = contentHeight; 
	} else {
		height = minHeight;
	}
	
	main.css({
		height: height,
		paddingBottom: 100
	});
	
	if (drapes.length > 0 && height > drapes.height()) {
		drapes.height(height);
	}
});