function AddCssClass(control,className)
{
    var key = (control.getAttribute('className') != null) ? 'className' : 'class';
    control.setAttribute(key, control.getAttribute(key) + " " + className);
}

function RemoveCssClass(control,className)
{
    var key = (control.getAttribute('className') != null) ? 'className' : 'class';
    var class_array = control.getAttribute(key).split(' ');
    var new_class;

    for (i = 0; i<class_array.length; i++)
    {
        if (class_array[i] != className && class_array[i] != '')
            new_class += " " + class_array[i];
    }
    
    control.setAttribute(key,new_class);
}