function getData(adres,parameters,zawartosc)
	{ 
		var req = null; 

		var zaw = document.getElementById(zawartosc);
		zaw.innerHTML="Start...";
	//var xmlHttp = null;
//

   
	    try 
		{
  		   req = new XMLHttpRequest();
	    } catch (e)
		{
		   var progIds = ['MSXML2.XMLHTTP', 'Microsoft.XMLHTTP', 'MSXML2.XMLHTTP.5.0', 'MSXML2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0'];
		   var success = false;
		   for (var iterator = 0; (iterator < progIds.length) && ( ! success); iterator ++) 
		   {
			  try
			  {
				  req = new ActiveXObject(progIds[iterator]);
				  success = true;
			  } catch (e)
			  {}
		}
		if ( ! success )
		{
			return null;
		}
	    }
		req.onreadystatechange = function()
		{ 
			
			zaw.innerHTML="<img src='img/loader.gif' border=0><br>Przesyłanie danych. Proszę czekać...";
			if(req.readyState == 4)
			{
				if(req.status == 200)
				{
					zaw.innerHTML=req.responseText;	
				}	
				else	
				{
					zaw.innerHTML="Błąd: Zwrócono status: " + req.status + " " + req.statusText;
				}	
			} 
		}; 
		req.open("POST", adres, true); 
		req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); 
		
		req.send(parameters); 
	} 

   function sendDates(form_name)
   {
		var formularz = document.getElementById(form_name);
		var getstr = "do_data="+formularz.do_data.value;
		getstr += "&od_data="+formularz.od_data.value;
		return getstr;
   }

       function ukryjWarstwe(nazwa)
	   {
			var element = document.getElementById(nazwa);
			element.style.display = "none";
	   }

       function wyczyscWarstwe(nazwa)
	   {
			var element = document.getElementById(nazwa); 
			if(element.innerHTML != '')
			{
				element.innerHTML = '';
			}
	   }


   function sendForm(form_name)
   {
		var formularz = document.getElementById(form_name);
		formularz=document.getElementById(form_name).getElementsByTagName('select');
		var getstr ="";
		for(i=0;i<formularz.length;i++)
		{
			getstr=getstr+formularz[i].name+"="+formularz[i].value+"&";
		}
		formularz = document.getElementById(form_name).getElementsByTagName('input');
		for(i=0;i<formularz.length;i++)
		{
			if(formularz[i].type != "submit")
			{
				if(formularz[i].type != "radio")
				{
					getstr=getstr+formularz[i].name+"="+formularz[i].value+"&";
				}
				else
				{
					if(formularz[i].checked)
					{
						getstr=getstr+formularz[i].name+"="+formularz[i].value+"&";
					}
				}
			}
		}
		formularz = document.getElementById(form_name).getElementsByTagName('textarea');
		for(i=0;i<formularz.length;i++)
		{
			getstr=getstr+formularz[i].name+"="+formularz[i].value+"&";
		}		
		return getstr;
   }