function doKnowledgeSwitch() {
	var dInv = document.getElementById('knowledgefinder1');
	var dSho = document.getElementById('knowledgefinder2');

	if(dInv.style.display == 'none') {
		dInv.style.display = 'block';
		dSho.style.display = 'none';
	} else {
		dInv.style.display = 'none';
		dSho.style.display = 'block';
	}

	return false;
}

function checkSearchForm(keywords, topicalArea_id, document_type)
{
	var returnValue = keywords != '' || topicalArea_id != '' || document_type != '';

	if (!returnValue)
	{
		alert("Please enter something to search for.");
	}
		
	return returnValue;
}