clearText = function (TxtID,alt) {
    if($("#" + TxtID).val()==alt)
    $("#" + TxtID).val("");
}
BakText = function (TxtID, alt) {
    if ($("#" + TxtID).val() == "") {
        $("#" + TxtID).val(alt);
    }
}
function getQueryStringRegExp(name) {
    var reg = new RegExp("(^|\\?|&)" + name + "=([^&]*)(\\s|&|$)", "i");
    if (reg.test(location.href)) return decodeURIComponent(RegExp.$2.replace(/\+/g, " ")); return "";
}
$(function () {
	search_input="keyword";
    if (search_input) {
        keyword = getQueryStringRegExp("q");
        if (keyword == "") $("#" + search_input).val("站内搜索");
        else $("#" + search_input).val(keyword);

        $("#" + search_input).bind("focus", function () { clearText(search_input, "站内搜索"); });
        $("#" + search_input).bind("blur",
         function () { BakText(search_input, "站内搜索"); }
         );
    }

});