/* Contester JavaScript support functions
 * Copyright (c) 2007-2010, Klopov Igor
 * Please see license.txt in Contester directory
 * for copyright notices and details.
 */

var contesterVersion = "2.4";

var alreadyFocused = false;

function obj(oid) {
if (document.getElementById) {
return document.getElementById(oid);
} else if (document.all) {
return document.all[oid];
} else {
return null;
}
}
function setFocus(oid) {
o = obj(oid);
if (!o) return;
o.focus();
}
function quote(fid, text) {
f = obj(fid);
if (!f) return;
f.value += '[quote] ' + text + ' [/quote]\n';
f.focus();
}
function quoteSelected(fid) {
ds = document.selection;
if (!ds) return;
selected = ds.createRange().text;
if (!selected) {
alert('Сначала выделите текст для цитирования!');
} else {
quote(fid, selected);
}
}
function checkLength(fid, max) {
f = obj(fid);
if (!f) return true;
left = max - f.value.length;
return (left > -5);
}
function keepLength(fid, max) {
f = obj(fid);
if (!f) return;
left = max - (msg = f.value).length;
if (left < 0) {
f.value = msg.substring(0, max);
}
}
function keepLengthEx(fid, max, cid) {
f = obj(fid);
if (!f) return;
c = obj(cid);
if (!c) return;
cs = c.style;
left = max - (msg = f.value).length;
if (left < 0) {
f.value = msg.substring(0, max); c.innerHTML = 0;
} else {
c.innerHTML = left;
} // без else!
if (left <= 20) {
cs.color = 'red'; cs.fontWeight = 'bold';
} else {
cs.color = 'black'; cs.fontWeight = 'normal';
}
}
function appendValue(oid, app) {
o = obj(oid);
if (!o) return;
if (!o.value) return;
o.value = o.value + app;
}
function hide(oid) {
o = obj(oid);
if (!o) return;
o.style.display = 'none';
}
function show(oid) {
o = obj(oid);
if (!o) return;
o.style.display = '';
}
function makeBack(oid) {
o = obj(oid);
if (!o) return;
o.className = 'back';
}
function makeLight(oid) {
o = obj(oid);
if (!o) return;
o.className = 'light';
}
function makeDark(oid) {
o = obj(oid);
if (!o) return;
o.className = 'dark';
}
function drop(hid, sid) {
hide(hid);
show(sid);
}
function dropEx(hid, s1id, s2id) {
hide(hid);
show(s1id);
show(s2id);
}
function burn(oidp) {
makeLight(oidp + 'x');
makeBack(oidp + 'y');
makeBack(oidp + 'z');
}
function unburn(oidp) {
makeDark(oidp + 'x');
makeLight(oidp + 'y');
makeLight(oidp + 'z');
}
function setDocument(c, oid) {
var o = obj(oid);
if (!o) return;
o.innerHTML = c;
}
function loadDocument(u, oid) {
var o = obj(oid);
if (!o) return;
var r;
if (window.XMLHttpRequest) {
r = new XMLHttpRequest();
} else if (window.ActiveXObject) {
r = new ActiveXObject('Microsoft.XMLHTTP');
}
if (!r) return;
r.onreadystatechange = function() {
if (r.readyState != 4) return;
try { r.status; } catch (e) {
setTimeout(function(){loadDocument(u, oid);}, 10000);
return;
}
if (r.status != 200) {
setTimeout(function(){loadDocument(u, oid);}, 10000);
return;
}
ins = r.responseText;
if (ins.indexOf('<nochange />') == 0) {
setTimeout(function(){loadDocument(u, oid);}, 10000);
return;
}
o.innerHTML = ins;
while (true) {
bp = ins.indexOf('<script');
if (bp == -1) break;
ins = ins.substring(bp, ins.length);
bp = ins.indexOf('>');
ins = ins.substring(bp + 1, ins.length);
ep = ins.indexOf('</script');
var scr = ins.substring(0, ep);
while (scr.substring(0, 1) == ' ') scr = scr.substring(1, scr.length);
while (scr.substring(scr.length - 1, scr.length) == ' ') scr = scr.substring(0, scr.length - 1);
if (scr.substring(0, 4) == '<!--') scr = scr.substring(4, scr.length);
if (scr.substring(scr.length - 5, scr.length) == '//-->') scr = scr.substring(0, scr.length - 5);
eval(scr);
}
}
r.open('GET', u, true);
r.send(null);
}
function leadZero(a) {if (a < 10) {return '0' + a.toString(10);} else {return a.toString(10);};}
function unleadZero(b) {if (b.substr(0, 1) == '0') {return b.substr(1);} else {return b;};}
function tickTime(sid, mid, hid, delta) {
var s = obj(sid);
if (!s) return;
var m = obj(mid);
if (!m) return;
var h = obj(hid);
if (!h) return;
var ss = unleadZero(s.innerHTML);
var sm = unleadZero(m.innerHTML);
var sh = unleadZero(h.innerHTML);
var ts = parseInt(ss);
var tm = parseInt(sm);
var th = parseInt(sh);
ts += delta;
if (ts < 0) {ts = 59; tm--;};
if (ts > 59) {ts = 0; tm++;};
if (tm < 0) {tm = 59; th--;};
if (tm > 59) {tm = 0; th++;};
if (th < 0) {
if (delta < 0) {
setTimeout(function(){window.location.reload();}, 3000);
}
} else {
s.innerHTML = leadZero(ts);
m.innerHTML = leadZero(tm);
h.innerHTML = leadZero(th);
setTimeout(function(){tickTime(sid, mid, hid, delta);}, 1000);
}
}
function addSecondsRu(dt, incsec) {
function getToken(delimiter) {
x = dt.indexOf(delimiter);
if (x < 0) x = dt.length;
var r = parseInt(unleadZero(dt.substring(0, x)));
if (isNaN(r)) return -1;
dt = dt.substring(x + 1);
return r; }
var dd = getToken('.');
if (dd < 0) return '';
var dm = getToken('.');
if (dm < 0) return '';
var dy = getToken(' ');
if (dy < 0) return '';
var th = getToken(':');
if (th < 0) return '';
var tm = getToken(':');
if (tm < 0) tm = 0;
var ts = getToken(' ');
if (ts < 0) ts = 0;
var c = 0;
ts += incsec;
if (ts > 59) {
c = ts % 60;
tm += (ts - c) / 60;
ts = c; }
if (tm > 59) {
c = tm % 60;
th += (tm - c) / 60;
tm = c; }
if (th > 23) {
c = th % 24;
dd += (th - c) / 24;
th = c; }
return leadZero(dd) + '.' + leadZero(dm) + '.' + leadZero(dy) + ' ' +  leadZero(th) + ':' + leadZero(tm) + ':' + leadZero(ts);
}
function blinkText(tid) {
var t = obj(tid);
if (!t) return;
t.style.color = '#8000ff';
setTimeout(function(){unblinkText(tid);}, 250);
}
function unblinkText(tid) {
var t = obj(tid);
if (!t) return;
t.style.color = '';
setTimeout(function(){blinkText(tid);}, 250);
}
var markerLastClickedID = '';
var markerLastClickedHref = '';
function markerHighLight(node) {
var sn = node.firstChild;
while (sn) {
if (sn.tagName.toString().toLowerCase() == 'td') {
if (!sn.getAttribute('classsave')) {
sn.setAttribute('classsave', sn.className);
}
sn.className = 'marked';
}
sn = sn.nextSibling;
}
}
function markerUnhighLight(node) {
var sn = node.firstChild; var a;
while (sn) {
if (a = sn.getAttribute('classsave')) {
sn.className = a;
}
sn = sn.nextSibling;
}
}
function markerClick(pid, mrn, mrv) {
var sn = obj(pid).firstChild;
while (sn) {
if (sn.getAttribute) {
if (sn.getAttribute('mrn0')) {
if (sn.getAttribute(mrn) == mrv) {
markerHighLight(sn);
} else {
markerUnhighLight(sn);
}
}
}
sn = sn.nextSibling;
}
}
function properSourceFile(f) {
if (!f) return true;
if (f == '') return true;
f = f.toLowerCase();
var e2 = f.substring(f.length - 2, f.length);
var e3 = f.substring(f.length - 3, f.length);
var e4 = f.substring(f.length - 4, f.length);
var e5 = f.substring(f.length - 5, f.length);
if (e4 == '.cpp') return true; else
if (e2 == '.c') return true; else
if (e4 == '.dpr') return true; else
if (e4 == '.pas') return true; else
if (e5 == '.java') return true; else
if (e3 == '.cs') return true; else
if (e3 == '.js') return true; else
if (e3 == '.vb') return true; else
return false;
}
function fitTextarea(tid) {
t = obj(tid);
if (!t) return;
if (t.rows < 16) {
t.rows = 16;
}
var w = 0;
if (self.screen) {
w = screen.width;
} else if (self.java) {
var j = java.awt.Toolkit.getDefaultToolkit();
var s = j.getScreenSize();
w = s.width;
}
if (w > 1030) {
if (t.style.width != '450px') {
t.style.width = '450px';
}
}
}