function openWnd(url,w,h){
	w=(w?w:850);
	h=(h?h:700);
	var wnd=window.open(url,"_blank","width="+w+",height="+h+",scrollbars=1,toolbar=0,menubar=0,history=0,resizable=1");
	wnd.window.focus();
	return false;
}
var itsloaded=0;
function _doUnload(){
	if (itsloaded) doUnload();
}
window.onunload=_doUnload;