function showInputTypeHelp(inputType)
{
	var otherInputType = inputType == "html" ? "plain" : "html";
	document.getElementById(inputType + "_help").style.display = "block";
	document.getElementById(otherInputType + "_help").style.display = "none";
}

function expandChatInput(button)
{
	var node = document.getElementById("chattextarea");
	node.rows = 20;
	button.disabled = true;
}