function GetParentIfExists(wnd)
{
	var wndOpener = wnd.parent;
	if (!wndOpener) wndOpener = wnd;
	return wndOpener;
}
function OpenPopupWindow(childURL, childName, childFeatures)
{
	var wndOpener = GetParentIfExists(window);
	var wndChild;
	wndChild = wndOpener.open(childURL, childName, childFeatures);
	if (wndChild != null) {
	    if (g_JS_isWin || !g_JS_isIE)
		    wndChild.focus();
    }
}