//ip与域名验证函数
function checkIP()
{
    var ipArray,ip,j;
    ip = document.ipform.ip.value;

    if(/[A-Za-z_-]/.test(ip)){
        if (ip.indexOf(" ")>=0){
            ip = ip.replace(/ /g,"");
            document.ipform.ip.value = ip;
        }
        if (ip.toLowerCase().indexOf("http://")==0){
            ip = ip.slice(7);
            document.ipform.ip.value = ip;
        }
        if(!/^([\w-]+\.)+((com)|(net)|(org)|(gov\.cn)|(info)|(cc)|(com\.cn)|(net\.cn)|(org\.cn)|(name)|(biz)|(tv)|(cn)|(mobi)|(name)|(sh)|(ac)|(io)|(tw)|(com\.tw)|(hk)|(com\.hk)|(ws)|(travel)|(us)|(tm)|(la)|(me\.uk)|(org\.uk)|(ltd\.uk)|(plc\.uk)|(in)|(eu)|(it)|(jp))$/.test(ip)){
            alert("不是正确的域名");
            document.ipform.ip.focus();
            return false;
        }
    }
    else{
        ipArray = ip.split(".");
        j = ipArray.length
        if(j!=4)
        {
            alert("不是正确的IP");
            document.ipform.ip.focus();
            return false;
        }

        for(var i=0;i<4;i++)
        {
            if(ipArray[i].length==0 || ipArray[i]>255)
            {
                alert("不是正确的IP");
                document.ipform.ip.focus();
                return false;
            }
        }
    }
}
//手机号码验证函数
function checkMobile(){
    var sMobile = document.mobileform.mobile.value
    if(!(/^1[3|4|5|8][0-9]\d{4,8}$/.test(sMobile))){
        alert("不是完整的11位手机号或者正确的手机号前七位");
        document.mobileform.mobile.focus();
        return false;
    }
}
//邮政编码验证函数
function checkZip(){
    var sZip = document.zipform.zip.value
    if(!(/^\d{4,6}$/.test(sZip))){
        alert("请输入邮政编码前4-6位");
        return false;
    }
}
//区号验证
function checkZone(){
    var sZone = document.zoneform.zone.value
    if(!(/^0\d{2,6}$/.test(sZone))){
        alert("请输入以“0”开头的3-7位区号");
        return false;
    }
}
//身份证验证
function checkID(){
    var sID = document.IDform.userid.value
    if(!(/^\d{15}$|^\d{18}$|^\d{17}[xX]$/.test(sID))){
        alert("请输入15位或18位身份证号");
        document.IDform.userid.focus();
        return false;
    }