//js参数安全过滤
//&	<	>	“	‘
//&amp;	&lt;	&gt;	&quot;	&#39;
//二级导航，鼠标悬停更换背景图标
function icon_on(icon_id){
    var src = '/statics/fer2/images/'+icon_id+'_on.png';
    $('#'+icon_id).css("background-image","url("+src+")");
    $('#'+icon_id).css("background-image","url("+src+")");
    $('#'+icon_id+' a').css("color","#6dbc19 ");
}
function icon_off(icon_id){
    var src = '/statics/fer2/images/'+icon_id+'.png';
    $('#'+icon_id).css("background-image","url("+src+")");
    $('#'+icon_id+' a').css("color","#000 ");
}
function safe_replace(str){
    return str.replace(/</g, "")
        .replace(/>/g, "")
        .replace(/&/g, "")
        .replace(/</g, "")
        .replace(/>/g, "")
        .replace(/"/g, "")
        .replace(/'/g, "")
        .replace("alert", "")
        .replace("iframe", "")
        .replace("script", "")

        .replace(/%/g, "")
        .replace(/#/g, "")
        .replace(/;/g, "")
        .replace(/\\/g, "")
        .replace(/\//g, "")

        .replace("%", "")
        .replace("#", "")
        .replace(";", "")
        .replace("\\", "")
        .replace("/", "")
        ;
}
//jquery获得url的get参数
function get_params(name) {
    var reg = new regexp("(^|&)" + name + "=([^&]*)(&|$)"); //构造一个含有目标参数的正则表达式对象
    var r = decodeuri(window.location.search).substr(1).match(reg); //匹配目标参数
    if (r != null) return unescape(r[2]); return null; //返回参数值
}
//手机验证
function check_mobile(str){
    if(!(/^1[34578]\d{9}$/.test(str))){
        return false;
    }
    return true;
}
//邮箱格式验证
function check_email(str){
    var myreg = /^([a-za-z0-9]+[_|\_|\.]?)*[a-za-z0-9]+@([a-za-z0-9]+[_|\_|\.]?)*[a-za-z0-9]+\.[a-za-z]{2,3}$/;
    if(!myreg.test(str)){
        return false;
    }else{
        return true;
    }
}
//验证码格式验证
function check_code(str){
    if(str.length!=4){
        return false;
    }else{
        return true;
    }
}
//过长字符验证
function check_length(str,len){
    if(str.length>len){
        return false;
    }else{
        return true;
    }
}
/**
 * 获取 referer
 * @returns {*}
 */
function get_referer(){
    if(document.referrer){
        return document.referrer;
    }else{
        return false;
    }
}
/**
 * 验证referer是否安全
 * @param str
 * @returns {boolean}
 */
function check_referer(str){
    if(str==''){
        return true;
    }
    var regen = /[`~!$^*()_+<>"{},;'[\]]/im,
        regcn = /[·！#￥（——）；“”‘、，|《。》、【】[]]/im;
    if(regen.test(str) || regcn.test(str)) {
        return false;
    }else{
        return true;
    }
}