function Inint_AJAX() {
   try { return new ActiveXObject("Msxml2.XMLHTTP");  } catch(e) {} //IE
   try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {} //IE
   try { return new XMLHttpRequest();} catch(e) {} //Native Javascript
   alert("XMLHttpRequest not supported");
   return null;
};

function cabins(src, val, action, tour) {
     var req = Inint_AJAX();
     req.onreadystatechange = function () { 
          if (req.readyState==4) {
               if (req.status==200) {
                    document.getElementById(src).innerHTML=req.responseText;
               } 
          }
     };
     req.open("GET", "http://www.bluecruisesturkey.com/tools/find_day.php?data="+src+"&val="+val+"&action="+action+"&tour="+tour); 
     req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8"); // set Header
     req.send(null);
}