function validateSearchForm(formId) {
	var zipcodeId = formId + ':' + 'zipcode';
	var zipcode = document.getElementById(zipcodeId);
   	if (zipcode != null && zipcode.value.length > 0) {
   		var radiusId = formId + ':' + 'radius';
   		var radius  = document.getElementById(radiusId);
   		if (radius != null && radius.selectedIndex < 1) {
       		alert("Please select a Radius.");
           	radius.focus();
            return false;
       	}
    }
    return true;
}