function showimage(path, width, height) {
  if (width == 0 || height == 0) {
    alert("Картинка не назначена");
    return false;
  }
  sb = "auto";
  width += 30;
  if (width < 600) {
    width = 600;
    sb = "no";
  }
  if (width > 1000) {
    width = 1000;
    sb = "yes";
  }
  height += 140;
  if (height < 320) {
    height = 320;
    sb = "no";
  }
  if (height > 650) {
    height = 650;
    sb = "yes";
  }
  window.open(path, 'imagewindow', 'left=20,top=20,height=' + height + ',width=' + width + ',menubar=no,resizable=yes,status=no,scrollbars=' + sb);
}


function show_answer(id, arr_id) {
  if (document.getElementById(id).style.display == "") {
    document.getElementById(id).style.display = "block";
  } else if (document.getElementById(id).style.display == "none") {
    document.getElementById(id).style.display = "block";
  } else if (document.getElementById(id).style.display == "block") {
    document.getElementById(id).style.display = "none";
  }
}

function searchclear()
{
	if ((document.getElementById('topsearch').value =='Поиск по сайту...') || (document.getElementById('topsearch').value =='Search on this site...')) {
    document.getElementById('topsearch').value = '';
  }
}

function check_search_form(form, lang) {
	if (form.str.value.length < 3) {
    if (lang == "ru" || lang == "rus") {
      alert("Введите слово не короче 3 символов!");
    } else {
      alert("Please enter keyword 3 characters or more!");
    }
    return false;
  } else {
    return true;
  }
}