[Sho]

Well, with the information on the page you recommended, cybrcyfr, I did the following:

<SCRIPT LANGUAGE="JavaScript" TYPE="text/javascript">
<!--

var supported = (document.getElementById || document.all);

if (supported)
{
	document.write("<STYLE TYPE='text/css'>");
	document.write(".postbit_regular {display: block}");
	document.write(".postbit_hidden {display: none}");
	document.write("</STYLE>");

	var max = 7;
	var data_regular = new Array();
	for (var i=1;i<=max;i++)
	{
		data_regular[i+1] = false;
	}
	
	var max = 7;
	var data_hidden = new Array();
	for (var i=1;i<=max;i++)
	{
		data_hidden[i+1] = false;
	}	

}

function contract(i)
{
	if (!supported)
	{
		alert('This link does not work in your browser.');
		return;
	}
	data_regular[i] = (data_regular[i]) ? false : true;
	current = (data_regular[i]) ? 'none' : 'block';
	if (document.getElementById)
	{
		document.getElementById('postbit_regular'+i).style.display = current;	
	}
	else if (document.all)
	{
		document.all['postbit_regular'+i].style.display = current;
	}
}

function expand(i)
{
	if (!supported)
	{
		alert('This link does not work in your browser.');
		return;
	}
	data_hidden[i] = (data_hidden[i]) ? false : true;
	current = (data_hidden[i]) ? 'block' : 'none';
	if (document.getElementById)
	{
		document.getElementById('postbit_hidden'+i).style.display = current;	
	}
	else if (document.all)
	{
		document.all['postbit_hidden'+i].style.display = current;
	}
}

// -->
</SCRIPT>

... and two <divs> in the "postbit" template as containers, using those CSS classes and IDs. This expands/contracts in both browsers. Note that I have never used JavaScript before, so this might be a piece of s***.