// no JavaScript error message
function ClearError()
{
	window.status = "javascript error !";
	return true;
}
window.onerror = ClearError;

// window popup
function NewWindow(url, name, width, height, scroll)
{
	LeftPosition = (screen.width) ? (screen.width-width)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-height)/2 : 0;
	win = window.open(url, name, "height=" + height + ", width=" + width + ", top=" + TopPosition + ", left=" + LeftPosition + ", scrollbars=" + scroll + ", resizable=yes, menubar=no, toolbar=no, location=no, directories=no, status=no");
	if(win.window.focus) win.window.focus();
}

// object hide or show
function ShowHide(name)
{
	var Obj = (document.getElementById) ? document.getElementById(name) : document.all[name];
	if(Obj != null) Obj.style.display = (Obj.style.display == 'none') ? '' : 'none';
}