$(document).ready(function(){
	var startHeight = $('#main').height();
	var newHeight = $(window).height()-233;
	
	if(startHeight < newHeight){
		$('#main').height(newHeight);
	}
	
	$(window).resize(function(){
		var newHeight = $(window).height()-233;
		if(startHeight < newHeight){
			$('#main').height(newHeight);
		}
	});
});