function getCheckedValue(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 setCheckedValue(radioObj, newValue) {
	if(!radioObj)
		return;
	var radioLength = radioObj.length;
	if(radioLength == undefined) {
		radioObj.checked = (radioObj.value == newValue.toString());
		return;
	}
	for(var i = 0; i < radioLength; i++) {
		radioObj[i].checked = false;
		if(radioObj[i].value == newValue.toString()) {
			radioObj[i].checked = true;
		}
	}
}

function clearRB(buttonGroup)
{
  for (i=0; i < buttonGroup.length; i++) { 
  
    if (buttonGroup[i].checked == true) {
          buttonGroup[i].checked = false;
      }
      
  }  
}

function clearLensOption(optionName) {
    optionName.checked = false;
    var i=0;
    for (i=0; i < optionName.length; i++) {
        if (optionName[i].checked == true) {
            optionName[i].checked = false;
        }
    }
}