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('quiz').innerHTML = result;
         } else {
            alert('There was a problem with the request.');
         }
      }
   }

   function get(obj) {
//      var poststr = "fields_phone=" + encodeURI( document.getElementById("fields_phone").value ) +
//                    "&fields_names=" + encodeURI( document.getElementById("fields_names").value ) +
//                    "&fields_email=" + encodeURI( document.getElementById("fields_email").value ) +
//                    "&fields_question_id=" + encodeURI( document.getElementById("fields_question_id").value ) +
//                    "&fields_answer_id=" + encodeURI( getSelectedRadioValue(document.forms['answer'].elements['fields_answer_id']) );
      var poststr = "fields_question_id=" + encodeURI( document.getElementById("fields_question_id").value ) +
                    "&fields_answer_id=" + encodeURI( getSelectedRadioValue(document.forms['answer'].elements['fields_answer_id']) );
                    //alert(poststr);
      makePOSTRequest('./answer.do.php', poststr);
   }


   function voteResult() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById('vote').innerHTML = result;
           	//document.getElementById('percents').load("actual_video.php");
           	$("#percents").load("./actual_video.php");
         } else {
            alert('There was a problem with the request.');
         }
      }
   }

   function makeVoteRequest(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 = voteResult;
      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 rate_video(obj) {
      var poststr = "svID=" + encodeURI( document.getElementById("svID").value ) +
                    "&rate=" + encodeURI( document.getElementById("rate").value );
      makeVoteRequest('./rate_video.do.php', poststr);
   }

function getSelectedRadioValue(radioObj) {
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}
function slideToggleTV()
{
	$("#tvChart").slideToggle();
}
function slideToggleR()
{
	$("#radioChart").slideToggle();
}
var lastShown = 1;
function switch_chart(toShow)
{
	//$("#radioChart").slideToggle(1000,slideToggleTV);
	//$("#tvChart").slideToggle();
	//return;
	if(toShow == 1 && lastShown == 0)
	{
		lastShown = 1;
		$("#radioChart").slideToggle(1000,slideToggleTV);
		return;
		//$("#radioChart").hide('slow');
		//$("#tvChart").show('slow');
	}
	else if (toShow == 0 && lastShown == 1)
		{
			lastShown = 0;
			$("#tvChart").slideToggle(1000,slideToggleR);
			return;
		  //$("#radioChart").show('slow');
		  //$("#tvChart").hide('slow');
		}
}