function validEmail(email) {
  invalidChars = " /:,;";
  if (email == "") {
    return false;
  }
  for (i=0; i<invalidChars.length;i++) {
    badChar = invalidChars.charAt(i);
    if (email.indexOf(badChar,0) > -1) {
      return false;
    }
  }
  atPos = email.indexOf("@",1);
  if (atPos == -1) {
    return false;
  }
  if (email.indexOf("@",atPos+1) > -1) {
    return false;
  }
  periodPos = email.indexOf(".",atPos);
  if (periodPos == -1) {
    return false;
  }
  if (periodPos+3 > email.length) {
    return false;
  }
  return true;
}


function conf() {
   return confirm('Вы уверены?');
}


function bookmarksite(title, url) {
	if (document.all)
		window.external.AddFavorite(url, title);
	else if (window.sidebar)
		window.sidebar.addPanel(title, url, "")
}

function PhotoPopUp(id, width, height) {
	window.open('photo.php?id='+id,'photo','width='+width+',height='+height+',menubar=no,resizable=no,status=no,toolbar=no,scrollbars=no,top=100,left=200');
}

function DescriptionPopUp(type, id, width, height) {
	width = width + 285;
	height = height + 20;
	window.open('description.php?type='+type+'&id='+id,'description','width='+width+',height='+height+',menubar=no,resizable=no,status=no,toolbar=no,scrollbars=0,top=100,left=200');
}