var moving = null;   

var moveBy = 5;

function showImage(imageSrc) {
	document.getElementById('realizacja_image').src=imageSrc;
}


function move(moveID) 
{
    if(moving) {
        clear_move();
    }
    moving = setInterval('move_'+moveID+'()',20);
}    


function move_top_left()
{
    map = document.getElementById('map_container');
    
    map.scrollLeft  = map.scrollLeft-moveBy/2;
    map.scrollTop   = map.scrollTop-moveBy/2;
}


function move_top_right()
{
    map = document.getElementById('map_container');
    
    map.scrollLeft  = map.scrollLeft+moveBy/2;
    map.scrollTop   = map.scrollTop-moveBy/2;
}

function move_bottom_left()
{
    map = document.getElementById('map_container');
    
    map.scrollLeft  = map.scrollLeft-moveBy/2;
    map.scrollTop   = map.scrollTop+moveBy/2;
}

function move_bottom_right()
{
    map = document.getElementById('map_container');
    
    map.scrollLeft  = map.scrollLeft+moveBy/2;
    map.scrollTop   = map.scrollTop+moveBy/2;
}

function move_bottom()
{
    map = document.getElementById('map_container');
    map.scrollTop   = map.scrollTop+moveBy;
}


function move_top()
{
    map = document.getElementById('map_container');
    map.scrollTop   = map.scrollTop-moveBy;
}

function move_right()
{
    map = document.getElementById('map_container');
    map.scrollLeft  = map.scrollLeft+moveBy;
}

function move_left()
{
    map = document.getElementById('map_container');
    map.scrollLeft  = map.scrollLeft-moveBy;
}


function clear_move()
{
    if(moving) {
        clearInterval(moving);
        moving = null;
    }
    else {
        return true;
    }
}