var http_request = false;
   
   
   function makePOSTRequest(url, parameters) 
   {
	  
	   
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) 
		 {
            http_request.overrideMimeType('text/xml');
         }
      } 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('We are sorry, there seems to be a problem with our system.');
         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("sendcontact").innerHTML = result;     
         	
		 
		 } else {
            alert('We are sorry, there seems to be a problem with our system');
         }
      }
   }
   
   
   function postcontact() 
   {
	
	 	var txtsubject = document.contact.txtsubject.value;
	 	var txtfirstname = document.contact.txtfirstname.value;
	 	var txtsurname = document.contact.txtsurname.value;
	 	var txtmessage = document.contact.txtmessage.value;
	 	var txtemail = document.contact.txtemail.value;
		
   		var poststr = "txtsubject="+txtsubject+"&txtfirstname="+txtfirstname+"&txtsurname="+txtsurname+"&txtmessage="+txtmessage+"&txtemail="+txtemail;
      
		  
	 	makePOSTRequest('sendcontact.php', poststr);
	  
	  	document.getElementById('sendcontact').innerHTML = 'Please wait, sending information....';
   }