	var codeLength = 4; //验证码的长度   
	var checkCode = document.getElementById("checkCode");
	var random = new Array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R',
		'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',); //随机数   
	for(var i = 0; i < codeLength; i++) { //循环操作   
		var charIndex = Math.floor(Math.random() * 36); //取得随机数的索引   
		code += random[charIndex]; //根据索引取得随机数加到code上   
	}
	checkCode.value = code; //把code值赋给验证码   
}
//校验验证码   
function validate() {
	var inputCode = document.getElementById("Verification").value.toUpperCase(); //取得输入的验证码并转化为大写         
	if(inputCode.length <= 0) { //若输入的验证码长度为0   
		alert("请输入验证码！"); //则弹出请输入验证码   
	} else if(inputCode!= code) { //若输入的验证码与产生的验证码不一致时   
		alert("验证码输入错误！"); //则弹出验证码输入错误   
		createCode(); //刷新验证码   
	} else { //输入正确时   
		alert("^-^"); //弹出^-^   
	}
}

</script>
<script>
    $("#tiaokuan").click(function(){
        $(".tiaokuan").css("display","block");
    })
    $("#xx").click(function(){
        $(".tiaokuan").css("display","none");
    })
</script>
<script>
    $(".input").blur(function(){
        if($(".input").val()==""){
                $(".span").css("display","inline-block");
           } 
           else{
            $(".span").css("display","none");
           }
    })
    $(".input1").blur(function(){
        if($(".input1").val()==""){
                $(".span1").css("display","inline-block");
           } 
           else{
            $(".span1").css("display","none");
           }
    })
    $(".input2").blur(function(){
        if($(".input2").val()==""){
                $(".span2").css("display","inline-block");
           } 
           else{
            $(".span2").css("display","none");
           }
    })
    $(".input3").blur(function(){
        if($(".input3").val()==""){
                $(".span3").css("display","inline-block");
           } 
           else{
            $(".span3").css("display","none");
           }
    })
    $(".input4").blur(function(){
        if($(".input4").val()==""){
                $(".span4").css("display","inline-block");
           } 
           else{
            $(".span4").css("display","none");
           }
    })
    $(".input5").blur(function(){
        if($(".input5").val()==""){
                $(".span5").css("display","inline-block");
           } 
           else{
            $(".span5").css("display","none");
           }
    })
    $(".input6").blur(function(){
        if($(".input6").val()==""){
                $(".span6").css("display","inline-block");
           } 
           else{
            $(".span6").css("display","none");
           }
    })

</script>
<script>
    //身份证号码验证
function isCardNo() { 
  // 身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X 
    var reg = /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/; 
    if(reg.test($("#id_card").val()) === false) { 
        alert("身份证输入不合法"); 
        return false; 
  } 
} 
//密码英文+数字验证
function CheckPassWord() { //密码必须包含数字和字母
    var reg = /^(?![^a-zA-Z]+$)(?!\D+$)/;
    if (reg.test($("#password").val()) === false){
        alert('密码格式错误');
        return false;
    }
}
</script>
<script>
      
</script>

</html>Here are today’s solar images taken from Al Sadeem Observatory, September 29, 2018.
The sky was clear with light to moderate air turbulence making the seeing and transparency average at the time these images were taken.
The Sun has been quiet and spotless for over two weeks (16 consecutive days to be exact). The latest sunspot number (based on visual count and Wolf number calculation) is 0. A small area of pores was seen emerging (encircled) at the central portion of the Sun’s disk. This will be closely monitoring on its development and its effect to overall solar activity in the next few days. Other solar features were several eruptive prominences at the limbs (mostly at the Sun’s southern hemisphere) and a plage associated with the developing active region<<What happens if you don't complete a course but change majors?

Hi everybody, I was wondering if anybody has been in a similar situation:

I'm currently in the (soon to be retired) BS IT Security degree plan, but planning to change to BS Cybersecurity and Information Assurance at the beginning of my next term (December 1st). The only course I have left for this term is C246 -- the Cisco ICND1 course.

As I'm approaching the end of my term, I feel increasingly that I'm not going to be able to pass this exam. The material is tough, and I haven't devoted enough time to it. I would need to schedule my first attempt for next week and a likely necessary second attempt by the end of November, but I'm nowhere near ready.

My job (I'm in IT for a retail company) has been extremely demanding for the last few months. I've often ended up working weekends and sometimes overnight, which obviously cuts into my study time. I'm on call at work this week and again right at the end of November. These weeks will be very disruptive to my studying.

On a personal level, I'm just not as excited by this material as I once was. When I'm studying I feel as if I'm just going through the motions. It just doesn't "stick" the way a lot of the other courses did. The only other course I've felt this way about was the mind-numbing Project+ one. The difference is that Project+ is easy... The Cisco certs are not.

And that brings me to my primary problem, and why I'm changing majors -- the Cisco certifications (CCNA R&amp;S and Security) just aren't relevant to my career anymore. I entered into the BS IT Security degree plan early last year, and have made a lot of progress, but a lot has changed since I started. My current job primarily deals with application security, and I don't have much desire or hope to enter the networking field. The material covered in the BS CS&amp;IA courses matches up much more closely with the stuff I do on a daily basis. In fact, switching from IT Security to CS&amp;IA will almost double the number of CUs I need to finish, but to me it's worth it to have more relevant courses and not have to slog through the Cisco stuff.

So, that said, what would happen if I do fail the ICND1? I realize this is a worst-case, and I'm not actively planning to fail, but it's a definite possibility at this point. I am anticipating having to take a second attempt, but that will put me right at the end of my