function searchFocus(a)
 {
  if(a.value == 'поиск по сайту'){a.value = '';}
 }

function searchBlur(a)
 {
  if(a.value == ''){a.value = 'поиск по сайту';}
 }

function loginFocus(a)
 {
  if(a.value == 'логин'){a.value = '';}
 }

function loginBlur(a)
 {
  if(a.value == ''){a.value = 'логин';}
 }

function passwordFocus(a)
 {
  if(a.value == 'пароль'){a.value = '';}
 }

function passwordBlur(a)
 {
  if(a.value == ''){a.value = 'пароль'}
 }

function logoutExecute()
 {
  var
   forms = document.getElementsByTagName('form');

  document.forms['logout_form'].submit(true);
 }

function doCart(form_id)
 {
  var
   forms = document.getElementsByTagName('form');

  document.forms['good' + form_id.toString() + '_form'].submit(true);
 }

function preview(id)
 {
  var preview_window;

  var new_window=window.open("./preview.php?id="+id.toString(), preview_window, "width=800px, height=600px, top=0px, left=0px, toolbar=no, status=no");
 }