function hideCurrentlyShownDiv() {
    var currentShownDivName = document.getElementById('shownDivId').value;
    var currentShownDiv = document.getElementById(currentShownDivName);
    if(currentShownDiv != null) {
        currentShownDiv.style.display = 'none';
    }
}

function showDiv(divId) {
		document.body.style.cursor = 'pointer';
    hideCurrentlyShownDiv();
    document.getElementById('shownDivId').value = divId;
    document.getElementById(divId).style.display = '';
		Effects.defaultFade(divId+'_img');
}

function mouseOut() {
		document.body.style.cursor = 'default';
}