$(document).ready(function(){
	var t; //timeout handler
	var delay = 750; //timeout in miliseconds
	$(".plus-ikona").mouseover(function(){
		var object_id = this.id;
		var id_part = object_id.split("-");
		if(id_part[0] == "plus" && id_part[1] == "ikona" && !isNaN(id_part[2])) {
			t = setTimeout('ukazPlusNahled('+id_part[2]+')',delay);
		}
	});

	$(".plus-ikona").mouseout(function(){
		clearTimeout(t);
		var object_id = this.id;
		var id_part = object_id.split("-");
		if(id_part[0] == "plus" && id_part[1] == "ikona" && !isNaN(id_part[2]))
			skryjPlusNahled(id_part[2]);
	});
});

function ukazPlusNahled(id) {
  var nahled = "#plus-nahled-" + id;
  var ikona = '#plus-ikona-' + id;
  if ($(nahled).length > 0 && $(ikona).length > 0)
	{
		$(nahled).fadeIn("fast");
		var width_nahled = $(nahled).width();
		var height_nahled = $(nahled).height();
		var bottom = $(ikona).height() + 25;
		var left = $(ikona).width()/2 - width_nahled/2;

		$(nahled).css("bottom", bottom);
		$(nahled).css("left", left);
  }
}

function skryjPlusNahled(id) {
    var nahled = $("#plus-nahled-" + id);
    if (nahled) {
			$(nahled).fadeOut("fast");
    }
}