function changeBook(script_path)
{
 ind = document.formBible.site.selectedIndex;
 if (ind == 0) {
   parent.main.location.href="main.php";
 }
 else {
  parent.main.location.href = script_path + '&b=' + document.formBible.site.options[ind].value;
 }
}

function checkForm() {
  if ( document.formBible.searchwords.value == '' ) {
    alert ('Моля, въведете думи за търсене в Библията.');
    document.formBible.searchwords.focus();
    return false;
  }
}