function createRequestObject()
{
	try
	{
		return new XMLHttpRequest()
	}
	catch(e)
	{
		try
		{
			return new ActiveXObject('Msxml2.XMLHTTP')
		}
		catch(e)
		{
			try
			{
				return new ActiveXObject('Microsoft.XMLHTTP')
			}
			catch(e)
			{
				return null;
			}
		}
	}
}

function showContent(link)
{
	var cont=document.getElementById('answers');
	var loading=document.getElementById('loading');
	cont.innerHTML=loading.innerHTML;
	var http=createRequestObject();
	
	if(http)
	{
		http.open('post', link);
		http.onreadystatechange=function()
			{
				if(http.readyState == 4)
				{
					cont.innerHTML=http.responseText;
				}
			}
		http.send(null);    
	}
	else
	{
		document.location=link;
	}
}

function getRadioGroupValue(radioGroupObj)
{
	for (var i=0; i<radioGroupObj.length; i++)
		if (radioGroupObj[i].checked)
			return radioGroupObj[i].value;
	return null;
}