function cart_add(id)
 {
  var req;
  if (window.XMLHttpRequest) req = new XMLHttpRequest();
  else if (window.ActiveXObject) {
      try {
          req = new ActiveXObject('Msxml2.XMLHTTP');
      } catch (e){}
      try {
      req = new ActiveXObject('Microsoft.XMLHTTP');
      } catch (e){}
  }
 
  if (req) {
      req.onreadystatechange = function() {
          if (req.readyState == 4 && req.status == 200)
           {
            document.getElementById('cart_add_'+id).innerHTML=req.responseText;
            if (req.responseText!='error')
             {
              document.getElementById('cart_items_count').innerHTML=parseInt(document.getElementById('cart_items_count').innerHTML)+parseInt(count);
             }
           }
      };
      req.open("POST", 'ajax.php', true);
      req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
      count=document.getElementById('items_count_'+id).value;
      if (count && count!='0') req.send("id="+id+"&count="+count); else alert(error_word);
  }
  else alert("Браузер не поддерживает AJAX");
 }


function search_query(query)
 {
  var req;
  if (window.XMLHttpRequest) req = new XMLHttpRequest();
  else if (window.ActiveXObject) {
      try {
          req = new ActiveXObject('Msxml2.XMLHTTP');
      } catch (e){}
      try {
      req = new ActiveXObject('Microsoft.XMLHTTP');
      } catch (e){}
  }
 
  if (req) {
      req.onreadystatechange = function() {
          if (req.readyState == 4 && req.status == 200)
           {
            //alert(req.responseText);
            if (req.responseText)
             {
              document.getElementById('search_query').style.display='';
              document.getElementById('search_query').innerHTML=req.responseText;
             }
            else document.getElementById('search_query').style.display='none';
            //else 
             
            /*
            document.getElementById('cart_add_'+id).innerHTML=req.responseText;
            if (req.responseText!='error')
             {
              document.getElementById('cart_items_count').innerHTML=parseInt(document.getElementById('cart_items_count').innerHTML)+parseInt(count);
             }*/
           }
      };
      
      req.open("POST", 'ajax.php', true);
      req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
      req.send("query="+query);
  }
  else alert("Браузер не поддерживает AJAX");
 }