function vote() 
{
    var pollWidget = document.getElementById("divPoll"); 
    var inputElements = pollWidget.getElementsByTagName("INPUT");
    var userSelection; 
    
    for(i=0; i<inputElements.length;i++) 
    {
        if(isRadioButton(inputElements[i])) 
        {
            if(inputElements[i].checked) 
            {
                userSelection = inputElements[i].id; 
                break; 
            }
        }
    }
    
    // call the server method to note the changes
    CallServer(userSelection,'');
   
 }
 
 function ReceiveServerData(rValue) 
 {
    document.getElementById("divPoll").innerHTML = rValue; 
 }
 

function isRadioButton(target) 
{
    return target.type == 'radio';
}