function search() {
    var type = "sell";
    var k = JHshLTrim(JHshRTrim(window.document.getElementById("search_keywords").value));
    if (null != k && "" != k) {
        var types = window.document.getElementsByName("t");
        for (var i = 0; i < types.length; ++i) {
            if (types[i].checked) {
                type = types[i].value;
                break;
            }
        }
        window.document.location = "http://search.pack.cn/" + type + "/" + encodeURIComponent(k);
    }
}
function simuclick(event, target) {
    if (event.keyCode == 13 && !(event.srcElement && (event.srcElement.tagName.toLowerCase() == "textarea"))) {
        var defaultButton = document.getElementById(target);
        if (defaultButton && typeof (defaultButton.click) != "undefined") {
            defaultButton.click();
            event.cancelBubble = true;
            if (event.stopPropagation) event.stopPropagation();
            return false;
        }
    }
    return true;
}
function JHshLTrim(sString) {
    var sStr, i, iStart, sResult = "";

    sStr = sString.split("");
    iStart = -1;
    for (i = 0; i < sStr.length; i++) {
        if (sStr[i] != " ") {
            iStart = i;
            break;
        }
    }
    if (iStart == -1) { return ""; }    //表示sString中的所有字符均是空格,则返回空串
    else { return sString.substring(iStart); }
}
function JHshRTrim(sString) {
    var sStr, i, sResult = "", sTemp = "";
    // if (sString.length == 0) { return "" ;} // 参数sString是空串

    sStr = sString.split("");
    for (i = sStr.length - 1; i >= 0; i--)  // 将字符串进行倒序
    {
        sResult = sResult + sStr[i];
    }
    sTemp = JHshLTrim(sResult); // 进行字符串前空格截除

    if (sTemp == "") { return ""; }

    sStr = sTemp.split("");
    sResult = "";
    for (i = sStr.length - 1; i >= 0; i--) // 将经处理后的字符串再进行倒序
    {
        sResult = sResult + sStr[i];
    }
    return sResult;
}