#radio button value

 var ua = window.navigator.userAgent;  var msie = ua.indexOf("MSIE ");  if (msie > 0){    radio.value = getValueFromRadioButton('radioBtnName')  }

function getValueFromRadioButton(name) {

  //Get all elements with the name   var buttons = document.getElementsByName(name);   for(var i = 0; i < buttons.length; i++) {      //Check if button is checked      var button = buttons[i];      if(button.checked) {         //Return value         return button.value;      }   }   //No radio button is selected.   return null; }