function checkMenus()
{

    els = getElementsByClass('sitemenu21');

    for (i = 0; i < els.length; i++) {
	els[i].style.display = 'block';
    }

    els = getElementsByClass('sitemenu20');

    for (i = 0; i < els.length; i++) {
	els[i].style.display = 'none';
    }



}

function nothing()
{

}

function myWait(mili)
{
    window.setTimeout('nothing()', mili);
}


function hideSecondLevelMenus(myclass)
{
    els = getElementsByClass(myclass);

    for (i = 0; i < els.length; i++) {
	els[i].style.display = 'none';
    }

}

function toggleSitemenu2(myel)
{

    el = document.getElementById(myel);
    console.log(el.style);
    if (el.style.display =="block" || el.style.display != 'none') {
	toggleHow = 'off';
    } else {
	toggleHow = 'on';
    }

	leftEl =document.getElementById('menuLeftEnd'); 
	rightEl =document.getElementById('menuRightEnd'); 

    if (toggleHow == 'off') {
	leftEl.src = 'img/sitemenu1LeftEnd.gif';
	rightEl.src = 'img/sitemenu1RightEnd.gif';

	el.style.display = 'none';	
    } else {
	hideSecondLevelMenus('sitemenu20');
	hideSecondLevelMenus('sitemenu21');

	leftEl.src = 'img/sitemenu1Left.gif';
	rightEl.src = 'img/sitemenu1Right.gif';

	el.style.display = 'block';		
    }


}


function changeNavCourse(courseId, chapterId)
{
    makeHttpRequest('navCourse.php?courseId=' + courseId + '&chapterId=' + chapterId, 'doIt', 'loading', 0);
}

function doIt(content)
{
  document.getElementById('navCourse').style.display = 'block'; // it shows in the right  the text: Apasati linkul Contact now...
  document.getElementById('navCourse').innerHTML = content; // replaces the form_adm html with the content from the ajax request
}


function loading()
{
  document.getElementById('navCourse').innerHTML = 'asteptati un moment...';
}