function toggleSearchOptions(strVisibility) {
	$("searchOptions").setStyle('visibility', strVisibility);
	}
	
function validateSearchInput() {
	var userInput = (document.forms['frmSearch'].elements['txtKeyword'].value).clean();
	for (rb = 0; rb < document.forms['frmSearch'].elements['rdoSearchType'].length; rb++) {
		if (document.forms['frmSearch'].elements['rdoSearchType'][rb].checked) var srchType = document.forms['frmSearch'].elements['rdoSearchType'][rb].value;
		}
	var strAlert = "";
	switch (srchType) {
		case "product":
			if (userInput == "") strAlert += "Enter at least one keyword to perform a product search.";
			break;
		case "store":
			if (userInput == "") strAlert += "Enter at least one keyword to perform a store search.";
			break;
		case "local":
			//make sure input is a zip code
			if (isNaN(userInput) || userInput.length != 5) strAlert += "Enter a 5-digit zip code to perform a local search.";
			break;
		case "review":
			if (userInput == "") strAlert += "Enter at least one keyword to perform a review search.";
			break;
		case "people":
			if (userInput == "") strAlert += "Enter at least one keyword to perform a people search.";
			break;
		}
	if (strAlert != "") {
		alert(strAlert);
		return false;
		}
	else return true;
	}