function checkform(thisform)
	{
	returnval=true;
	for (var j=0; j<(thisform.elements.length); j++)
		{
		indx = thisform.elements[j].name.indexOf('_required');
		if (indx != -1)
			{
			fieldname=thisform.elements[j].name.substring(0,indx);
			if (thisform.elements[fieldname].value.length == 0)
				{
				alert(thisform.elements[j].value);
				j = (thisform.elements.length);
				returnval = false;
				}
			}
		}
	return returnval;
	}