// caching preloader gif
preloaderImg = new Image();
preloaderImg.src = "style/js/ajax_progress.gif";

function getHttpRequest()
{
	request = null;

	if (window.XMLHttpRequest)     
	{
			request = new XMLHttpRequest();     // przeglądarki trzymające się norm
	}
	else
	if (window.ActiveXObject)   // ActiveX version
	{
		   request = new ActiveXObject("Microsoft.XMLHTTP");    // Internet Explorer
	}	
		
	return request;
}

function ajaxRequestData(id, page, method, data)
{
	var request = getHttpRequest();
	if ( request == null )
	{
		alert("XMLHttpRequest - error. Please upgrade your browser (www.firefox.com, www.opera.com)");
		return;
	}
	
   request.onreadystatechange = function () {
								if (request.readyState == 4)
								{
									document.getElementById(id).innerHTML = request.responseText;
								} 
								else
								{
								   document.getElementById(id).innerHTML = "<div style=\"margin: 15px;\">loading <img src=\"style/js/ajax_progress.gif\" alt=\"loading...\" style=\"vertical-align: middle;\"/></div>"
								}   
						   };
						   
						   
	try {
		if (method == "post")
		{
			request.open( "POST", page, true );
			request.setRequestHeader( 'Content-Type', 'application/x-www-form-urlencoded' );
			request.setRequestHeader( 'Content-length', data.length );		
			request.send(data); 
		}
		else
		{		
		   request.open( "GET", page, true);
		   request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");  
	   	   request.send(null); 
		}
	}
	catch (e) {
		alert("I can't do that");
	}

}

function ajax_mail(id, page, method, data) {
  ajaxRequestData(id, page, method, data);
}

   var http_request = false;
   function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      
      http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }

   function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById('mail_response').innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
   function get(obj) {
      var poststr = "";
      for(i=0; i<obj.elements.length; i++)
      {
        if(obj.elements[i].type == 'checkbox') {
          var p = obj.elements[i].name + "=" + obj.elements[i].checked + "&";  
        }
        else {
          var p = obj.elements[i].name + "=" + obj.elements[i].value + "&";
        }
        poststr += p;
      }
      poststr = poststr.substr(0, poststr.length-1);
      makePOSTRequest('mail.php', poststr);
   }
   
    function getKarieraForm(obj,tmp) {
      var poststr = "";
      for(i=0; i<obj.elements.length; i++)
      {
        if(obj.elements[i].type == 'checkbox') {
          var p = obj.elements[i].name + "=" + obj.elements[i].checked + "&";  
        } else if(obj.elements[i].type == 'file') {
            var p = obj.elements[i].name + "=" + obj.elements[i].value + "&";
        }
        else {
          var p = obj.elements[i].name + "=" + obj.elements[i].value + "&";
        }
        poststr += p;
      }
      poststr = poststr.substr(0, poststr.length-1);
      makePOSTRequest('sendmail.php', poststr);
   }
   
   function resubmit() {
        document.formularz.action="settmpname.php";
        document.formularz.submit();
  }