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('myspan').innerHTML = result;
         } else {
            alert('There was a problem with the request.');
         }
      }
	  else {
		  document.getElementById('myspan').innerHTML = "<img src='images/indicator.gif' /> <b>...</b>";
	  }
   }

   function getRadioValue(formItem) {
	    var radioFld = document.offerteform[formItem];
		var teller = 0;
		var endValue = "";
		for(i=0;i<radioFld.length; i++) {
			if(radioFld[i].checked == true) {
				endValue = radioFld[i].value;
				teller++
			}
			if((i == (radioFld.length-1)) && (teller == 0)){
				return "";
			}
			else if((i == (radioFld.length-1)) && (teller != 0)) {
				return endValue;
			}
		}
   }

   function getChkboxValue(formItem) {
	    var radioFld = document.offerteform[formItem];
		var choise = "";
		for(i=0;i<radioFld.length; i++) {
			if(radioFld[i].checked == true) {
				choise += radioFld[i].value+", ";
			}
			if(i == (radioFld.length-1)){
				return choise;
			}
		}
   }

   function get(obj) {
      var poststr = "naam=" + encodeURI( document.getElementById("naam").value ) +
	  				"&functie=" + encodeURI( document.getElementById("functie").value ) +
	  				"&firma=" + encodeURI( document.getElementById("firma").value ) +
					"&adres=" + encodeURI( document.getElementById("adres").value ) +
					"&postcode=" + encodeURI( document.getElementById("postcode").value ) +
					"&plaats=" + encodeURI( document.getElementById("plaats").value ) +
					"&land=" + encodeURI( document.getElementById("land").value ) +
					"&telefoon=" + encodeURI( document.getElementById("telefoon").value ) +
					"&fax=" + encodeURI( document.getElementById("fax").value ) +
					"&email=" + encodeURI( document.getElementById("email").value ) +
					"&hoe_kent_u=" + encodeURI( document.getElementById("hoe_kent_u").value ) +
					"&meerinfo=" + getChkboxValue("meerinfo") +
					"&afmetingbreedte=" + encodeURI( document.getElementById("afmetingbreedte").value ) +
					"&afmetinglengte=" + encodeURI( document.getElementById("afmetinglengte").value ) +
					"&afmetingzijwand=" + encodeURI( document.getElementById("afmetingzijwand").value ) +
					"&afmetingnok=" + encodeURI( document.getElementById("afmetingnok").value ) +
					"&ondergrond=" + getChkboxValue("ondergrond") +
					"&ondergrondanders=" + encodeURI( document.getElementById("ondergrondanders").value ) +
					"&gebruikenals=" + getChkboxValue("gebruikenals") +
					"&isoleren=" + getRadioValue("isoleren") +
					"&periodegebruik=" + getRadioValue("periodegebruik") +
					"&bouwvergunning=" + getRadioValue("bouwvergunning") +
					"&koophuur=" + getChkboxValue("koophuur") +
					"&opmerkingen =" + encodeURI( document.getElementById("opmerkingen").value );
	  makePOSTRequest('http://www.norelhallenbouw.nl/postofferte.php', poststr);
   }