function on (newCssClass)
{
        element = document.getElementById("department_group");
        if (element == undefined)
        {
                alert ('department_group undefined!');
        }
        else
        {
                for (i=0; i<element.childNodes.length; i++)
                {
                        if (element.childNodes[i].nodeName == "IMG") 
                        {
                                element.childNodes[i].className=newCssClass;
                                break;
                        }
                }
        }
} 

function off (newCssClass)
{
        element = document.getElementById("department_group");
        if (element == undefined)
        {
                alert ('department_group undefined!');
        }
        else
        {
                for (i=0; i<element.childNodes.length; i++)
                {
                        if (element.childNodes[i].nodeName == "IMG") 
                        {
                                element.childNodes[i].className=newCssClass;
                                break;
                        }
                }
        }
}