var objMover;
var elements;
var current;
var in_scroll = false;
var up_link;
var down_link;
var offset = 172;
var step = 10;

// za slika promenlivi
var box_opacity = 90;
var box_speed = 10;
var grad_otvoren = false;
// do tuka

function $(objID) {
	return document.getElementById(objID);
}

function otvori_grad(gradID) {
	if (grad_otvoren)
		return;
	grad_otvoren = true;
	var counter = 0;
	var grad = $(gradID);
	grad.style.opacity = counter / 100;
	grad.style.mozOpacity = counter / 100;
	grad.style.filter = "alpha(opacity=" + counter + ")";
	grad.style.display = 'block';
	function f() {
		counter += box_speed;
		grad.style.opacity = counter / 100;
		grad.style.mozOpacity = counter / 100;
		grad.style.filter = "alpha(opacity=" + counter + ")";
		if (counter < box_opacity) {
			setTimeout(f, 0.5);
		}
	}
	;
	f();
}

function zatvori_grad(gradID) {
	var counter = box_opacity;
	var grad = $(gradID);
	grad.style.opacity = counter / 100;
	grad.style.mozOpacity = counter / 100;
	grad.style.filter = "alpha(opacity=" + counter + ")";
	function f() {
		counter -= box_speed;
		grad.style.opacity = counter / 100;
		grad.style.mozOpacity = counter / 100;
		grad.style.filter = "alpha(opacity=" + counter + ")";
		if (counter > 0) {
			setTimeout(f, 0.5);
		} else {
			grad.style.display = 'none';
			grad_otvoren = false;
		}
	}
	;
	f();
}