// validate the search form text box to make sure blank queries aren't submitted
// usage: onsubmit="return isBlank(this)"

function isBlank(form) {
	var field = form.elements['sp-q'];
	var value = field.value;
	if (value == '') {
		alert("If you're trying to run a search,\nplease enter a search term first."); 
		field.focus();
		field.blur();
		field.select();
		return false;
	}	else { return true }
}