function ajaxSend(url, string, div_id, strok)
{
  var ajaxObj=null;
  if(window.XMLHttpRequest)
  {
    ajaxObj=new XMLHttpRequest();
  }
  else if(window.ActiveXObject)
  {
    ajaxObj=new ActiveXObject("Microsoft.XMLHTTP");
  }
  else
  {
    return;
  }
 
	if (strok == ''){
		strok  ='<div class="ajax"><div>Подождите, идет загрузка...</div></div>';
	}

  document.getElementById(div_id).innerHTML=strok;
  ajaxObj.onreadystatechange = function()
  {
    if(ajaxObj.readyState==4)
    {
      document.getElementById(div_id).innerHTML=ajaxObj.responseText;

    }
  }
  ajaxObj.open('POST', url, true);
  ajaxObj.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded;');
  ajaxObj.send(string);

}

//дубли функции для параллельного вызова
function ajaxSend2(url, string, div_id, strok)
{
  var ajaxObj=null;
  if(window.XMLHttpRequest)
  {
    ajaxObj=new XMLHttpRequest();
  }
  else if(window.ActiveXObject)
  {
    ajaxObj=new ActiveXObject("Microsoft.XMLHTTP");
  }
  else
  {
    return;
  }
 
	if (strok == ''){
		strok  ='<div class="ajax"><div>Подождите, идет загрузка...</div></div>';
	}

  document.getElementById(div_id).innerHTML=strok;
  ajaxObj.onreadystatechange = function()
  {
    if(ajaxObj.readyState==4)
    {
      document.getElementById(div_id).innerHTML=ajaxObj.responseText;

    }
  }
  ajaxObj.open('POST', url, true);
  ajaxObj.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded;');
  ajaxObj.send(string);

}

function ajaxSend3(url, string, div_id, strok)
{
  var ajaxObj=null;
  if(window.XMLHttpRequest)
  {
    ajaxObj=new XMLHttpRequest();
  }
  else if(window.ActiveXObject)
  {
    ajaxObj=new ActiveXObject("Microsoft.XMLHTTP");
  }
  else
  {
    return;
  }
 
	if (strok == ''){
		strok  ='<div class="ajax"><div>Подождите, идет загрузка...</div></div>';
	}

  document.getElementById(div_id).innerHTML=strok;
  ajaxObj.onreadystatechange = function()
  {
    if(ajaxObj.readyState==4)
    {
      document.getElementById(div_id).innerHTML=ajaxObj.responseText;

    }
  }
  ajaxObj.open('POST', url, true);
  ajaxObj.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded;');
  ajaxObj.send(string);

}

function ajaxSend4(url, string, div_id, strok)
{
  var ajaxObj=null;
  if(window.XMLHttpRequest)
  {
    ajaxObj=new XMLHttpRequest();
  }
  else if(window.ActiveXObject)
  {
    ajaxObj=new ActiveXObject("Microsoft.XMLHTTP");
  }
  else
  {
    return;
  }
 
	if (strok == ''){
		strok  ='<div class="ajax"><div>Подождите, идет загрузка...</div></div>';
	}

  document.getElementById(div_id).innerHTML=strok;
  ajaxObj.onreadystatechange = function()
  {
    if(ajaxObj.readyState==4)
    {
      document.getElementById(div_id).innerHTML=ajaxObj.responseText;

    }
  }
  ajaxObj.open('POST', url, true);
  ajaxObj.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded;');
  ajaxObj.send(string);

}