function mouseOver(elem)
{
    elem.style.backgroundColor = '#E5EEF9';
    elem.style.border = '1px solid #E5EEF9';
    elem.style.cursor = 'hand';
}

function mouseOut(elem)
{
    elem.style.backgroundColor= '#ffffff';
    elem.style.border= '1px solid #ffffff';
    elem.style.cursor = 'auto';
}

function expand(tahw, path, doc){
    table_contract = new Image(1,1);
    table_contract.src = path + "open.gif";
    table_expand = new Image(1,1);
    table_expand.src = path + "close.gif";

    what  = tahw + "_menu"
    where = tahw + "_table"

    if(doc.getElementById(what).style.display == "none"){
        doc.getElementById(what).style.display = "block";
        doc.getElementById(where).src = table_expand.src;
        doc.getElementById(where).alt = "Contrair";
    }
    else{
        doc.getElementById(what).style.display = "none";
        doc.getElementById(where).src = table_contract.src;
        doc.getElementById(where).alt = "Expandir";
    }
}