var lastOpened = null;
var lastOpenedImg = null;
var lastOpenedImgLevel = '';

function oc(nodeId, imgId, level) {
    var child = document.getElementById(nodeId);
    
    if (child.style.display == 'none') {
        child.style.display = '';
        if (lastOpened != null) {
            if ((obj = getElementByIdIn(nodeId, lastOpened)) == false) {
                lastOpened.style.display = 'none'; //?
            }
        }
        lastOpened = child;
        
    } else {
        child.style.display = 'none';
        if (lastOpened != null) {
            lastOpened = null;
        }
    }
} // end of function


function getElementByIdIn(id, inObj)
{
    if (inObj.nodeType != 1) {
        return false;
    }

    for (var i = 0; i < inObj.childNodes.length; i++) {
        if (inObj.childNodes[i].id == id) {
            return inObj.childNodes[i];
        } else {
            if (inObj.childNodes[i].hasChildNodes()) {
                if (ret = getElementByIdIn(id, inObj.childNodes[i])) {
                    return ret;
                }
            }
        }
    }
    return false;
} // end of function

img1 = new Image(); img1.src = "/images/reklamines/01_str.gif";
img2 = new Image(); img2.src = "/images/reklamines/k_str.gif";
img3 = new Image(); img3.src = "/images/reklamines/black_str.gif";
img4 = new Image(); img4.src = "/images/reklamines/blue_str.gif";