function popupImage(img) {
		if(img) window.open("viewimg.php?img="+img,'',"left=400,top=250,width=200,height=200,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1");
	}

	function isEmpty(s) {
		l=s.length;
		if(!l)return true;
		for(i=0;i<l;i++) {c=s.charAt(i);if(c!=" "&&c!="\r"&&c!="\n"&&c!="\t") return false;}
		return true;
	}
	function checkMail(x) {
		var filter=/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		return filter.test(x);
	}

  function bookMark() {
    if (navigator.userAgent.indexOf('MSIE ')>=0)
      window.external.addFavorite(document.location.href, '{TITLE}');
    else
      alert('To bookmark a web page:\n\n1. Go to the web page you want to bookmark.\n2. Click "Bookmarks" in main menu of your browser.\n3. Choose "Add Bookmark".');
  }

	// вывести ссылку mailto со скрытым мейлом 
	function hiddenEmail(u,h,t) {
		var m;
		m=u+'@'+h; if(!t) t=m;
		document.write('<a href="mailto:'+m+'">'+t+'</a>');
	}