var nCho= [1,1,1,1,1, 1,1,1,1,1, 1,1,1,1,1, 1,1,1,1];
var nJung=[1,1,1,1,1, 1,1,1,1,2, 2,2,1,1,2, 2,2,1,1,2, 1];
var nJong=[0,1,1,2,1, 2,2,1,1,2, 2,2,2,2,2, 2,1,1,2,1, 1,1,1,1,1, 1,1,1];

var dv=21*28;
var start=false, dt=0, avt=0, topt=0, avp=0, exn=0;
var exrn=3, oItv="";
var tStrs, tStrs_n=50;

function gId(id) { return document.getElementById(id); }
function sId(id,s) { document.getElementById(id).innerHTML=s; }

function xHDiv(hg) {
 var hc,cho,jung,jong;
 hc=hg.charCodeAt(0)-0xAC00;//ubase1;
 if(hc<0) return 1;
 cho=Math.floor(hc/dv);
 hc=hc%dv;
 jung=Math.floor(hc/28);
 jong=hc%28;
 var tn=nCho[cho]+nJung[jung]+nJong[jong];
 return tn;
}
function xCalN(s) {
 var l=s.length;
 var i=0, tn=0, c;
 while(i<l) {
  if(s.charCodeAt(i)<200) tn++;
  else tn+=xHDiv(s.charAt(i));
  i++;
 }
 return tn;
}
function xReset() {
 tStrs_n=tStrs.length;
 start=false; dt=avt=topt=exn=avp=0;
}
function xNextStr() {
  var fe=document.forms['f1'].elements;
  if(exn>=tStrs_n) {
    xSend(Math.floor(avt));
    if(confirm("선택한 글을 모두 끝냈습니다!\n현재글로 다시 연습하시겠습니까?")) {
      xReset();
    } else { //글선택 화면으로...
       window.history.back();
       return;
    }
  }
  document.getElementById("id_err").innerText="";
  sId('t3', exn+"/"+tStrs_n);
  fe['t1'].value=tStrs[exn];
  gId("id_next").innerText=(exn+1<tStrs_n)?tStrs[exn+1]:"";
  fe['t2'].focus();
  xStartItv();
}
var sgrp1="■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■";
function xCkStr() {
 var i,j,k,s="",l;
 dt=((new Date).getTime()-dt);
 if(dt<1) dt=1;
 start=false;
 var dc=document;
 var fe=document.forms['f1'].elements;
 var s1=fe['t1'].value, s2=fe['t2'].value;
 var l1=s1.length, l2=s2.length;
 if(l2<l1) { alert("윗글의 내용을 끝까지 입력하세요!"); fe['t2'].focus(); fe['t2'].value=""; xStartItv(); return; }
 var on=0;
 for(i=0;i<l1;i++) {
   if(s1.charAt(i)==s2.charAt(i)) {
     on++; k=".";
   } else k="x";
   if(s1.charCodeAt(i)>200) s+="."+k;
   else s+=k;
 }
 if(on<l1) {
   dc.getElementById("id_err").innerText=s;
   if(on<(l1-l1/2)) {
      alert("정확도가 75% 이하면 통과가 되지 않습니다.\n다시 입력해 주세요.");
      dc.getElementById("id_err").innerText=""; fe['t2'].focus(); fe['t2'].value=""; xStartItv(); return;
   } else {
      alert("오타가 있습니다!");
   }
 }
 fe['t2'].value="";
 var t=Math.floor((xCalN(s2)*60000)/dt);
 var w=gId('grp1').offsetWidth-10;

 if(t>topt) {
   topt=t;
   //dc.getElementById("id_g2").innerText=sgrp1.substr(0,Math.floor(t*0.07));
   dc.getElementById("id_g2").style.width=Math.floor((t/10)*(w/100))+'px';
   dc.getElementById("id_s2").innerText=t;
 }
 dc.getElementById("id_s1").innerText=t;
 dc.getElementById("id_s2").innerText=topt;
 avt=((avt*exn)+t)/(exn+1);
 dc.getElementById("id_s3").innerText=Math.floor(avt);
 var p=on*100/l1;
 dc.getElementById("id_s4").innerText=Math.floor(p);
 avp=(avp*exn+p)/(exn+1);
 dc.getElementById("id_s5").innerText=Math.floor(avp);

 gId("id_g1").style.width=Math.floor((t/10)*(w/100))+'px';
 gId("id_g3").style.width=Math.floor((avt/10)*(w/100))+'px';;
 gId("id_g4").style.width=Math.floor(p*(w/100))+'px';
 gId("id_g5").style.width=Math.floor(avp*(w/100))+'px';//innerText=sgrp1.substr(0,Math.floor(avp*0.4));

/*
 dc.getElementById("id_g1").innerText=sgrp1.substr(0,Math.floor(t*0.07));
 dc.getElementById("id_g3").innerText=sgrp1.substr(0,Math.floor(avt*0.07));
 dc.getElementById("id_g4").innerText=sgrp1.substr(0,Math.floor(p*0.4));
 dc.getElementById("id_g5").innerText=sgrp1.substr(0,Math.floor(avp*0.4));
*/
 exn++;
 xNextStr();
 fe['t2'].focus();
}
function xKeyDown() {
  if(start==false) { dt=(new Date).getTime(); start=true; }
  if(event.keyCode==13) {
    xCkStr();
    xStartItv();
  }
}
function xStartItv() {
  if(oItv) clearInterval(oItv);
  if(start) return;
  oItv=setInterval("xItv()",500);
}
function xItv() {
  if(start) { clearInterval(oItv); return; }
  if(document.forms['f1'].elements['t2'].value.length>0) {dt=(new Date).getTime(); start=true; clearInterval(oItv); }
}
extime=0;
function xItv2() {
  sId('t4', extime);
  extime++;
}
oItv2="";
function xStart() {
 xReset(); xNextStr(); document.forms['f1'].elements['t2'].focus();
 if(!oItv2) oItv2=setInterval("xItv2()",60000);
}