function mHover(obj, ent)
{
    if (ent == 'over') {
        if (obj.src.indexOf('-h.gif') < 1)
        {
            obj.src = obj.src.replace('.gif', '-h.gif');
        }
    }else{
        obj.src = obj.src.replace('-h.gif', '.gif');
    }
}
function clearText(formItem, defaultText) 
{
    if (formItem.value == defaultText)
    {
        formItem.value = "";
    }
}
function resetText(formItem, defaultText) 
{
    if(formItem.value == "")
    {
        formItem.value = defaultText;
    }
}
function setActiveButton(btnName)
{
    var btnObj = document.getElementById(btnName);
    if (btnObj.src.indexOf('-h.gif') < 1) {
        btnObj.src = btnObj.src.replace('.gif', '-h.gif');
    }
    btnObj.onmouseover = "";
    btnObj.onmouseout = "";
}
function voordeelPakketClick(pakketContainer, headerIMG, hiddenPakketFieldID)
{
    document.getElementById('selectedOption').innerHTML = '<img src="/design/img/voordeel/header_' + headerIMG + '.jpg" width="283" height="110" />';
    document.getElementById('selectedOption').innerHTML += document.getElementById(pakketContainer).innerHTML;
    document.getElementById(hiddenPakketFieldID).value = pakketContainer;
    document.getElementById('voordeelPakkettenContainer').style.display = 'none';
    document.getElementById('formulier').style.display = '';
}