//step 1: check that at least one of the fields has been completed, alert and exit if not,
function checkFilterSubmit() {
 		if ((document.FilterForm.topic.value == "selectone") && (document.FilterForm.keyword.value == "")) {
			alert("Please enter a keyword or select a topic.");
			return false;
		}
				
 //if everything is OK, let the form submit
		else
   {return true;}
		}