var aryClassElements = new Array();
var aryClassElementsContent = new Array();

function changeClass(id){
    document.getElementById(id).className = 'abaOpen';
}

function getElementsByClassName( strClassName, obj ) {
    if ( obj.className == strClassName ) {
        aryClassElements[aryClassElements.length] = obj;
    }
    for ( var i = 0; i < obj.childNodes.length; i++ )
        getElementsByClassName( strClassName, obj.childNodes[i] );
}

function getContentElementsByClassName( strClassName, obj ) {
    if ( obj.className == strClassName ) {
        aryClassElementsContent[aryClassElementsContent.length] = obj;
    }
    for ( var i = 0; i < obj.childNodes.length; i++ )
        getContentElementsByClassName( strClassName, obj.childNodes[i] );
}



function clearStyle(onde){
    aryClassElementsContent.length = 0;
    getContentElementsByClassName(onde, document.body);
    for ( var i = 0; i < aryClassElementsContent.length; i++ ) {
        aryClassElementsContent[i].style.display = 'none';
    }
}

function clearClasses(classe, novaClasse){
    aryClassElements.length = 0;
    getElementsByClassName(classe, document.body );
    for ( var i = 0; i < aryClassElements.length; i++ ) {
        aryClassElements[i].className = novaClasse;
    }
}

function mostra(id){
    document.getElementById(id).style.display = 'block';
}