function ToggleCollapsiblePanelSimple() { 
    
    for (var i = 0; i < arguments.length; i++) {
        var target = document.getElementById(arguments[i]);
        
        if (target) {
            if( target.style.display == '' || target.style.display == 'block' ) {
                target.style.display = 'none';
            }
            else if( target.style.display == 'none' ) {
                target.style.display = '';       
            }
        }
    }
    
    
}