$(document).ready(function(){
	initScroll();
});
function initScroll(){
	var holder = $('#main');
	var topInd = 121;
	var bottomInd = 20;
	calcHeight();
	function calcHeight(){
		holder.css({
			height: $(window).height() - topInd - bottomInd
		});
	}
	$(window).resize(function(){
		calcHeight();
	});
}