var http_request = false;
function show(id, height)
{
  var elementID = document.getElementById(id);
  if(elementID.offsetHeight < height && http_request.responseText != "OK")
  {
    elementID.style.height = elementID.offsetHeight + 12 + "px";
    var recursived = 'show(\''+id+'\', '+height+')';
    setTimeout(recursived, 25);
  }
  else
  {
    document.getElementById('contact_form').style.height="auto";
  }
}

function fixHeight()
{
  
}


   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('contact_form').style.overflow = "auto";
	if(http_request.responseText == "OK")
	{
		document.getElementById('contact_form').innerHTML = "<br /><h3>Verzoek is succesvol verzonden.</h3><br />Zodra wij uw aanvraag hebben gevalideerd plaatsen wij deze online.<br />Gelieve binnen de week een link een terug te plaatsen.";
	}
	else
	{
            document.getElementById('myspan').innerHTML = result;
	}
            //alert(document.getElementById('contact_form').clientHeight +":"+document.getElementById('contact_form').offsetHeight);
            document.getElementById('contact_form').style.height="auto";

         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
   function get(obj) {
      var poststr = "name=" + 		escape(encodeURI(document.getElementById("name").value)) +
                    "&email=" + 	escape(encodeURI(document.getElementById("email").value)) +
                    "&link=" + 		escape(encodeURI(document.getElementById("link").value)) +
                    "&omschrijving=" + 	escape(encodeURI(document.getElementById("omschrijving").value)) +
                    "&site_name=" + 	escape(encodeURI(document.getElementById("site_name").value)) +
                    "&ajax=true" +
                    "&link_terug=" + 	escape(encodeURI(document.getElementById("link_terug").value));
      makePOSTRequest('post.php', poststr);
   }