/* открытие нового окна */
var wnd = null;
function winopen(url, target, width, height, settings) {
		window.name = "orig";
		if (!target) target = "_new";
		if (!settings) settings = "toolbar=no,location=no,status=yes,menubar=no,scrollbars=yes,resizable=yes";
		if (!width) width = 540; // defaults - width=540, height=600,
		if (!height) height = 600;
		if (screen )  {
			if (screen.availHeight && screen.availHeight <= 620)
				height = 500;
		};
		if(wnd) {
			if (!wnd.closed) {
				wnd.location = url;
				wnd.focus();
				return true;
			} else {
				wnd = null;
			}
		};
		allsett = "width=" + width + ", height=" + height + ", " + settings;
		if (!wnd) {
			wnd = window.open( url, target, allsett);
			wnd.focus();
//			wnd.opener = window;
		};
		return wnd;
}