js获取get方式的传值参数，网络版本稍作修改

//获取传值，原始版本有些小bug，已做修改

function getParameter(param) {

    var query = window.location.search;

    var iLen = param.length;

    var tempStart1 = query.indexOf("?" + param + "=");

    var tempStart2 = query.indexOf("&" + param + "=");

    var iStart = tempStart1 > tempStart2 ? tempStart1 : tempStart2;

    if (iStart == -1)

        return "";

    iStart += iLen + 2;

    var iEnd = query.indexOf("&", iStart);

    if (iEnd == -1)

        return query.substring(iStart);

    return query.substring(iStart, iEnd);

}