function preventMultipleSubmissions(e)
{
	if (!e.hasBeenSubmitted)
	{
		e.hasBeenSubmitted = true;
		
		var buttons = e.getElementsByTagName('button');
		for (var i = 0; i < buttons.length; i++)
		{
			var btn = buttons[i];
			btn.disabled = true;
		};
		return true;
	}
	else
	{
		return false;
	};
};