$('site_search_term').observe('focus', function(e){
	if ($('site_search_term').value == "Search Site") {
		$('site_search_term').value = "";
	}
});

$('site_search_term').observe('blur', function(e){
	if ($('site_search_term').value == "") {
		$('site_search_term').value = "Search Site";
	}
});