var err=[0,0];
function checkc(regcode){	
	var xmlhttp;
	try{
		xmlhttp=new XMLHttpRequest();
		}
	catch(e){
		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	xmlhttp.onreadystatechange=function(){
	if (xmlhttp.readyState==4){
		if (xmlhttp.status==200){
			var data=xmlhttp.responseText;
			code_result(data);
			}
		else{
			document.getElementById("checkisok").innerHTML="验证码校验失败,请联系管理员";
			}
		}
	else{
		document.getElementById("checkisok").innerHTML="正在进行验证码校验...";
		}
	}
	xmlhttp.open("post", "check_code.aspx", true);
	xmlhttp.setRequestHeader('Content-type','application/x-www-form-urlencoded');
	xmlhttp.send("regcode="+escape(regcode));
}
function code_result(data){
	var resultbox=document.getElementById("checkisok");
	if(data==1){
		resultbox.innerHTML='<img src="img/yesok.gif"/>';
                err[1]=1;
                logForm();
 
		}
	else{
		resultbox.innerHTML='<img src="img/yesno.gif"/>';
                err[1]=0;
                logForm();
		}
}


//判断用户名是否输入正确
function isnull(u_name){
        var u_name=document.getElementById("txtusername").value;
        if(u_name==""||isNumberString(u_name,"1234567890abcdefghijklmnopqrstuvwxyz_")!=1 || u_name.length<4 || u_name.length>20)
{

                document.getElementById("idisok").innerHTML='<img src="img/idno.gif"/>';
                err[0]=0;
                logForm();
          
                return false;}
        else{
        document.getElementById("idisok").innerHTML='<img src="img/isok.gif"/>';
        err[0]=1;
        checkid();
        return true;
 }
}

function checkid(){	
	var xmlhttp;
	try{
		xmlhttp=new XMLHttpRequest();
		}
	catch(e){
		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	xmlhttp.onreadystatechange=function(){
	if (xmlhttp.readyState==4){
		if (xmlhttp.status==200){
			var data=xmlhttp.responseText;
			id_result(data);
			}
		else{
			document.getElementById("idisok").innerHTML="校验用户名失败!请联系管理员QQ:20788767";
err[0]=0;
logForm();

			}
		}
	else{
		document.getElementById("idisok").innerHTML="正在校验用户名...";
		}
	}
        var regid=document.getElementById("txtusername").value;
        xmlhttp.open("post", "check_id.aspx", true);
	xmlhttp.setRequestHeader('Content-type','application/x-www-form-urlencoded');
	xmlhttp.send("regid="+escape(regid));
}
function id_result(data){
	var resultbox=document.getElementById("idisok");
	if(data==1){

		resultbox.innerHTML='<img src="img/findidno.gif"/>';
		err[0]=0;
                logForm();
                return false;

		}
	else{

                resultbox.innerHTML='<img src="img/findidok.gif"/>';
		err[0]=1;
                logForm();
                return true;

	}
}




	//判断是否为数字
	function isNumberString (InString,RefString)
	{
	if(InString.length==0) return (false);
	for (Count=0; Count < InString.length; Count++)  {
		TempChar= InString.substring (Count, Count+1);
		if (RefString.indexOf (TempChar, 0)==-1)  
		return (false);
	}
	return (true);
	}

function logForm(){

 if(err[0]==1 && err[1]==1)
{
    document.getElementById('submit').disabled=false;

}
else
{
    document.getElementById('submit').disabled=true;
}
} 



// JavaScript Document