/*
*  set the icon of as single accordion entry
*/
function setAccordionIcon(obj, ico_norm, ico_act) {
    $(obj).css({ "background-image": "url('" + ico_norm + "')" });
    $(obj).mouseover(function() { $(this).css({ "background-image": "url('" + ico_act + "')" }) });
    $(obj).mouseout(function() { $(this).css({ "background-image": "url('" + ico_norm + "')" }) });
}