var default_image = "";

function preload_images(map_number){

	var images = new Array;
	
	for (var mapNum = 0; mapNum < 15; mapNum++) {
		images[mapNum].src = '../img/map' + mapNum + '.png';
	}
	set_default_map(map_number);    
    return (images);
}

function set_default_map(map_number){
    default_image = map_number;
}

function swap_image_map(map_number){
    image_id = document.getElementById('czech_republic_map');
	  image_id.src = 'img/map' + map_number + '.png';
    image_id.style.cursor = 'pointer';
}

function show_div(number){
    hide_div();
    div_id = document.getElementById('k' + number);
    div_id.style.display = 'block';
    set_default_map(number);
}

function hide_div(){
    for (i = 1; i < 15; i++) {
        try {
            div_id = document.getElementById('k' + i);
            div_id.style.display = 'none';
        } 
        catch (chyba) {
        }
    }
}