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('pris').innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
   function get(obj) {     	        
	var poststr ="";
	var theForm = document.forms[0]
	
	
   	for(i=0; i<theForm.elements.length; i++){
      if(theForm.elements[i].type == "text" || theForm.elements[i].type == "textarea" || theForm.elements[i].type == "button"){
      	poststr += theForm.elements[i].name + "=" + encodeURI( theForm.elements[i].value) + "&"; 
      }
      else if(theForm.elements[i].type == "checkbox"){
		if (theForm.elements[i].checked==true) {			
			poststr += theForm.elements[i].name + "=" + theForm.elements[i].value + "&";    
		}		   
      }
      else if(theForm.elements[i].type == "select-one"){
      	poststr += theForm.elements[i].name + "=" + theForm.elements[i].options[theForm.elements[i].selectedIndex].value + "&";    		
		
      }
   	  else {
      	poststr += theForm.elements[i].name + "=" + encodeURI( theForm.elements[i].value) + "&";  				
      }	
   }   
   makePOSTRequest('offert.php', poststr);
   }