function GetXmlHttpObject(){
	var xmlHttp = null;
	try{// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}catch (e){// Internet Explorer 6+
		try{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      	}catch (e){
			try{// Internet Explorer 5+
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}catch (e){
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
	return xmlHttp;
}
function getFormElements(formName){
	var frm = document.forms[formName];
	var parameters = '';
	var count = frm.elements.length;
	var formFields = new Array();
	for(i=0; i<count; i++){
		if(frm.elements[i].type != 'button'){
			if(frm.elements[i].type != 'radio'){
				parameters = parameters + ((i > 0)?'&':'') + frm.elements[i].name + '=' + frm.elements[i].value;
			}
			if((frm.elements[i].type == 'radio') && frm.elements[i].checked){
				parameters = parameters + ((i > 0)?'&':'') + frm.elements[i].name + '=' + frm.elements[i].value;
			}
		}
	}
	return parameters;
}

function vote(frmname){
	var frm = document.forms[frmname];
	var parameters;
	var url;
	parameters = getFormElements(frmname);
	url = 'poll';
	
	xmlHttp = GetXmlHttpObject();
	if(xmlHttp == null){
		alert ("Please update your browser!");
		return;
	}
	xmlHttp.open("POST", url, true);
	xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=iso-8859-1");
	xmlHttp.setRequestHeader("Content-length", parameters.length);
	xmlHttp.setRequestHeader("Connection", "close");
	xmlHttp.setRequestHeader("Accept-Charset", "ISO-8859-1");
	xmlHttp.send(parameters);
	xmlHttp.onreadystatechange = function(){
		if(xmlHttp.readyState == 4){
			var xmldoc =  xmlHttp.responseText;
			var data = eval('(' + xmldoc + ')');
			if(data.votings[0].voting.err != ''){
				document.getElementById('idDivErrPoll').style.display = 'block';
				document.getElementById('idDivErrPoll').innerHTML = data.votings[0].voting.err;
			}
			document.getElementById('idDivPoll').style.display = 'none';
			document.getElementById('idDivResults').style.display = 'block';
			if(data.votings[0].voting.content != ''){
				document.getElementById('idDivResults').innerHTML = data.votings[0].voting.content;
			}
		}
	}
}

function backToPoll(){
	document.getElementById('idDivErrPoll').innerHTML = '';
	document.getElementById('idDivErrPoll').style.display = 'none';
	document.getElementById('idDivPoll').style.display = 'block';
	document.getElementById('idDivResults').innerHTML = '';
	document.getElementById('idDivResults').style.display = 'none';
}

function results(param){
	var url = 'vote.php?actiontodo=results&pid=' + param + '';
	
	xmlHttp = GetXmlHttpObject();
	if(xmlHttp == null){
		alert ("Please update your browser!");
		return;
	}
	xmlHttp.open("GET", url, true);
	xmlHttp.send(null);
	xmlHttp.onreadystatechange = function(){
		if(xmlHttp.readyState == 4){
			var xmldoc =  xmlHttp.responseText;
			var data = eval('(' + xmldoc + ')');
			if(data.votings[0].voting.err != ''){
				document.getElementById('idDivErrPoll').style.display = 'block';
				document.getElementById('idDivErrPoll').innerHTML = data.votings[0].voting.err;
			}
			document.getElementById('idDivPoll').style.display = 'none';
			document.getElementById('idDivResults').style.display = 'block';
			if(data.votings[0].voting.content != ''){
				document.getElementById('idDivResults').innerHTML = data.votings[0].voting.content;
			}
		}
	}
}