function checkFieldForValue(formName)
{
	if ( formName == 'headerFinder' && document.forms[formName].elements['text'].value == '' )
	{
		alert('Please enter a keyword to search for.');
		return false;
	}
	else
	if ( formName == 'finder' && document.forms[formName].elements['text'].value == '' && document.forms[formName].elements['lot'].value == '' )
	{
		alert('Please enter a keyword or lot number to search for.');
		return false;
	}
}