$(function() {
    var previous = "";
    $(window).bind("scroll", function(event) {
        var tabhigh;
        
        $("#contentdiv div.year:in-viewport").each(function() {
          tabhigh = "#t" + $(this).attr("id");
        });
        
        if (tabhigh != previous) {
        
        		$('.acttime').removeClass('acttime').addClass('time');
        		$(tabhigh).removeClass('time').addClass('acttime');
            previous = tabhigh;
        }        
    });
});

function goClick(url) {
	window.location.href = url;
}