filterSelection("all");
function filterSelection(c) {
	var x = document.getElementsByClassName("program");
	if (c == "all") c = "";
	for (var i = 0; i < x.length; i++) {
		x[i].classList.remove("show");
		if (x[i].className.indexOf(c) >= 0) x[i].classList.add("show");
	}
}

var btnContainer = document.getElementById("filters");
var btns = btnContainer.getElementsByClassName("btn");
for (var i = 0; i < btns.length; i++) {
	btns[i].addEventListener("click", function() {
		var current = document.getElementsByClassName("active");
		current[0].className = current[0].className.replace(" active", "");
		this.className += " active";
	});
}