//functions.js

	function makerequest(serverPage, objID) {
	
		xmlhttp = getxmlhttp();
		
		var obj = document.getElementById(objID);
		xmlhttp.open("GET", serverPage);
		xmlhttp.onreadystatechange = function() {
			if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
				obj.innerHTML = xmlhttp.responseText;
			}
		}
		xmlhttp.send(null);
	}
	
   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('li').innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }

	function getformvalues(fobj){
		var str = "";
		var val;
		var type;
		var name;
		for( var i = 0; i < fobj.elements.length; i++){
			type = fobj.elements[i].type;
			if(type == "checkbox"){
				if(fobj.elements[i].checked ==true){
					str += fobj.elements[i].name + "=" + fobj.elements[i].value + "\&";
				}
			}
		}
		return str;
	}

	function postform(theform, serverPage){
		var str = getformvalues(theform);
		makePOSTRequest(serverPage, str);
	}