$(document).ready(function() {
	
	if ($("#alphabet").length > 0) {
		fit_columns_vertically();
		$(window).resize(fit_columns_vertically);
	};
	
});

function fit_columns_vertically() {
	var window_height = document.documentElement.clientHeight;
	var top_margin = parseInt($("#alphabet").css("top").match(/\d+/)[0]);
	var adjusted_height = window_height - top_margin;
	var column_height = $("#alphabet ul:first").height();

	if ( (column_height * 2) < adjusted_height ) {
		$("#alphabet ul").removeClass("first");
		$("#alphabet ul").removeClass("last");
		$("#alphabet ul").addClass("equi");
	} else{
		$("#alphabet ul").removeClass("equi");
		$("#alphabet ul:first").addClass("first");
		$("#alphabet ul:last").addClass("last");
	};
}