function getVote(vote,pid)
{
var xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request");
 return;
 } 
var url="mod_poll/poll_process.php";
var params = "pid="+pid+"&vote="+vote;
xmlHttp.onreadystatechange=function(){
        if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){
            document.getElementById("poll_"+pid).innerHTML=xmlHttp.responseText;
        } else {
            document.getElementById("loader_"+pid).innerHTML="<img src='mod_poll/loading.gif' />&nbsp;";
        }
    };

	xmlHttp.open("POST",url,true);
	xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlHttp.setRequestHeader("Content-length", params.length);
	xmlHttp.setRequestHeader("Connection", "close");
	xmlHttp.send(params);
} 

function GetXmlHttpObject()
{ 
var objXMLHttp=null;
if (window.XMLHttpRequest)
 {
 objXMLHttp=new XMLHttpRequest();
 }
else if (window.ActiveXObject)
 {
 objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP");
 }
return objXMLHttp;
}

/*
following uber useful radio button functions lifted from breaking par consulting
http://www.breakingpar.com/bkp/home.nsf/0/CA99375CC06FB52687256AFB0013E5E9
*/
function getSelectedRadio(buttonGroup) {
   // returns the array number of the selected radio button or -1 if no button is selected
   if (buttonGroup[0]) { // if the button group is an array (one button is not an array)
      for (var i=0; i<buttonGroup.length; i++) {
         if (buttonGroup[i].checked) {
            return i
         }
      }
   } else {
      if (buttonGroup.checked) { return 0; } // if the one button is checked, return zero
   }
   // if we get to this point, no radio button is selected
   return -1;
} // Ends the "getSelectedRadio" function
function getSelectedRadioValue(buttonGroup) {
   // returns the value of the selected radio button or "" if no button is selected
   var i = getSelectedRadio(buttonGroup);
   if (i == -1) {
      return "";
   } else {
      if (buttonGroup[i]) { // Make sure the button group is an array (not just one button)
         return buttonGroup[i].value;
      } else { // The button group is just the one button, and it is checked
         return buttonGroup.value;
      }
   }
} // Ends the "getSelectedRadioValue" function