JPDB Draggable Menu

The submenu is now a draggable and transparency-adjustable element on the site.

נכון ליום 12-08-2025. ראה הגרסה האחרונה.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         JPDB Draggable Menu
// @namespace    https://greasyfork.org/users/you
// @version      1.3.0
// @description  The submenu is now a draggable and transparency-adjustable element on the site.
// @match        https://jpdb.io/*
// @run-at       document-start
// @inject-into  page
// @grant        GM_addStyle
// @license      MIT
// ==/UserScript==

(function () {
  'use strict';

  (function prehideJPDB() {
    if (!location.pathname.startsWith('/review')) return;
    const css = `
      html.jpdbf-prehide .main-row:has(#show-answer),
      html.jpdbf-prehide .main-row:has(#grade-1),
      html.jpdbf-prehide .main-row:has(#grade-2),
      html.jpdbf-prehide .main-row:has(#grade-3),
      html.jpdbf-prehide .main-row:has(#grade-4),
      html.jpdbf-prehide .main-row:has(#grade-5),
      html.jpdbf-prehide .jpdbf-prehide-target{
        visibility: hidden !important;
      }`;
    const st = document.createElement('style');
    st.id = 'jpdbf-prehide';
    st.textContent = css;
    (document.head || document.documentElement).appendChild(st);
    document.documentElement.classList.add('jpdbf-prehide');
    window.__jpdbf_unhideJPDB = (node) => {
      try { if (node) node.classList.remove('jpdbf-prehide-target'); } catch {}
      document.documentElement.classList.remove('jpdbf-prehide');
      try { st.remove(); } catch {}
      try { delete window.__jpdbf_unhideJPDB; } catch {}
    };
  })();

  const TUNE = {
    friction: 0.92, minSpeed: 12, maxSpeed: 6000,
    kickBase: 10, kickGain: 0.006, kickMin: 8, kickMax: 36, kickDur: 160, kickCooldown: 140,
    velWindowMs: 160, releaseQuietMs: 140, releaseQuietPx: 2,
    anchorSense: 24, lockSense: 2,
    intentX: 16, intentY: 14, intentSpeed: 420,
    moveThresh: 6
  };

  GM_addStyle(`
    :root{
      --jpdbfSideW: 32px;
      --jpdbfSideInsetX: 8px;
      --jpdbfSideInsetY: 6px;
      --jpdbfOpNudgeY: -1.5px;
      --jpdbfOpPad: 28px;
    }
    .jpdbf-float{
      position:fixed!important; z-index:2147483647!important; max-width:80vw; width:280px;
      background:rgba(20,20,22,var(--jpdbfAlpha,1)); color:#e7e7e7; border:1px solid #3a3a3a;
      border-radius:14px; box-shadow:none;
      padding:10px; box-sizing:border-box; cursor:grab; user-select:none; touch-action:none; overflow:hidden;
    }
    .jpdbf-float:active{cursor:grabbing}
    .jpdbf-float input[type="submit"], .jpdbf-float button{
      border-radius:10px!important; cursor:pointer; opacity: var(--jpdbfBtnOpacity, 1); transition: opacity .12s ease;
    }
    .jpdbf-float .main-row{ position:relative!important; }
    .jpdbf-float #show-checkbox-1-label.side-button{
      position:absolute!important; top:var(--jpdbfSideInsetY)!important; bottom:var(--jpdbfSideInsetY)!important; left:var(--jpdbfSideInsetX)!important;
      width:var(--jpdbfSideW)!important; display:flex!important; align-items:center!important; justify-content:center!important; margin:0!important; padding:0!important; border-radius:10px!important;
      opacity: var(--jpdbfBtnOpacity, 1); transition: opacity .12s ease;
    }
    .jpdbf-float.jpdbf-has-chevron .main.column{ margin-left:calc(var(--jpdbfSideW) + var(--jpdbfSideInsetX) + 8px)!important; }
    .jpdbf-float.jpdbf-op-open{ padding-bottom:var(--jpdbfOpPad); }
    .jpdbf-op-row{
      margin:8px 0 0; padding:4px 6px 0; width:100%; box-sizing:border-box;
      display:grid; grid-template-columns:1fr minmax(56px,auto); align-items:center; gap:10px;
    }
    .jpdbf-op-row input[type=range]{ width:100%; height:18px; margin:0; background:transparent; appearance:none; -webkit-appearance:none }
    .jpdbf-op-row input[type=range]::-webkit-slider-runnable-track{ height:8px; border-radius:9999px; background:#2b2b2e }
    .jpdbf-op-row input[type=range]::-webkit-slider-thumb{ -webkit-appearance:none; appearance:none; margin-top:-4px; width:16px; height:16px; border-radius:9999px; background:#d7d7d7; border:1px solid #666 }
    .jpdbf-op-row input[type=range]::-moz-range-track{ height:8px; border-radius:9999px; background:#2b2b2e }
    .jpdbf-op-row input[type=range]::-moz-range-thumb{ width:16px; height:16px; border-radius:9999px; background:#d7d7d7; border:1px solid #666 }
    .jpdbf-op-val{ display:flex; align-items:center; justify-content:flex-end; white-space:nowrap; font-size:12px; font-variant-numeric:tabular-nums; opacity:.95; min-width:5ch; text-align:right; line-height:1; transform: translateY(var(--jpdbfOpNudgeY)); }
  `);

  const STATE_KEY = 'jpdbf:pos:v1';
  const OPACITY_KEY = 'jpdbf:alpha:v1';

  const qs=(s,r=document)=>r.querySelector(s);
  const qsa=(s,r=document)=>Array.from(r.querySelectorAll(s));

  function findMenu(){
    const g = qs('#grade-1, #grade-2, #grade-3, #grade-4, #grade-5');
    if (g){ const mr=g.closest('.main-row'); if (mr) return mr; let c=g.parentElement;
      while(c&&c!==document.body){ if(qsa('input[type="submit"]',c).length>=2) return c; c=c.parentElement; } }
    const show = qs('#show-answer') || qs('input[type="submit"][value="Show answer"]');
    if (show){ const mr2=show.closest('.main-row'); if (mr2) return mr2;
      const f=show.closest('form'); if (f) { const r=f.closest('.main-row')||f.parentElement; if(r) return r; }
      return show.parentElement; }
    return null;
  }

  function detectMode(el){
    if (!el) return null;
    if (el.querySelector('#grade-1, #grade-2, #grade-3, #grade-4, #grade-5')) return 'gr';
    if (el.querySelector('#show-answer, input[type="submit"][value="Show answer"]')) return 'sa';
    return null;
  }

  function clamp(l,t,w,h){ const vw=innerWidth,vh=innerHeight; if(l<0)l=0; if(t<0)t=0; if(l+w>vw)l=vw-w; if(t+h>vh)t=vh-h; return {left:l,top:t}; }

  const loadState=()=>{ try{return JSON.parse(localStorage.getItem(STATE_KEY)||'null');}catch{return null;} };
  const saveEntry=e=>{ try{const st=loadState()||{}; st.pos=e; localStorage.setItem(STATE_KEY,JSON.stringify(st));}catch{} };
  const saveFromRect=r=>saveEntry(entryFromRect(r));

  function computeLocksFromRect(r){ const vw=innerWidth,vh=innerHeight,L=TUNE.lockSense;
    return {lockL:r.left<=L,lockR:(vw-(r.left+r.width))<=L,lockT:r.top<=L,lockB:(vh-(r.top+r.height))<=L}; }

  function computeAnchorAxes(r, E){
    const vw=innerWidth,vh=innerHeight;
    const dL=r.left, dT=r.top, dR=vw-(r.left+r.width), dB=vh-(r.top+r.height);
    const ax = dR<=E ? 'right' : (dL<=E ? 'left' : null);
    const ay = dB<=E ? 'bottom': (dT<=E ? 'top'  : null);
    return {ax, ay};
  }
  function maskNearEdges(r, E){
    const vw=innerWidth,vh=innerHeight;
    const dL=r.left, dT=r.top, dR=vw-(r.left+r.width), dB=vh-(r.top+r.height);
    return { L:dL<=E, R:dR<=E, T:dT<=E, B:dB<=E };
  }

  function isAnchoredX(e){ return !!(e && (e.lockL || e.lockR || e.ax==='left' || e.ax==='right')); }
  function isAnchoredY(e){ return !!(e && (e.lockT || e.lockB || e.ay==='top'  || e.ay==='bottom')); }

  function applyAnchoredPosition(w,h,e){
    const vw=innerWidth,vh=innerHeight;
    const ax=e.lockR?'right':(e.lockL?'left':(e.ax||null));
    const ay=e.lockB?'bottom':(e.lockT?'top':(e.ay||null));
    let l=e.x, t=e.y;
    if(ax==='right') l=Math.max(0,Math.min(vw-w,vw-w-(e.offR||0)));
    else if(ax==='left') l=0;
    if(ay==='bottom') t=Math.max(0,Math.min(vh-h,vh-h-(e.offB||0)));
    else if(ay==='top') t=0;
    return clamp(l,t,w,h);
  }

  function entryFromRect(r){
    const a=computeAnchorAxes(r, TUNE.anchorSense);
    const locks=computeLocksFromRect(r);
    const vw=innerWidth,vh=innerHeight;
    const offR=(a.ax==='right')?(vw-(r.left+r.width)):0;
    const offB=(a.ay==='bottom')?(vh-(r.top+r.height)):0;
    return {x:r.left,y:r.top,ax:a.ax,ay:a.ay,offR,offB,...locks};
  }

  function makePartialAnchorEntry(r, mask){
    const vw=innerWidth,vh=innerHeight;
    const e = { x:r.left, y:r.top, ax:null, ay:null, offR:0, offB:0,
      lockL:false, lockR:false, lockT:false, lockB:false };
    if(mask.R){ e.ax='right'; e.lockR=true; e.offR = vw-(r.left+r.width); }
    if(mask.L){ e.ax='left';  e.lockL=true; e.x = 0; }
    if(mask.B){ e.ay='bottom'; e.lockB=true; e.offB = vh-(r.top+r.height); }
    if(mask.T){ e.ay='top';    e.lockT=true; e.y = 0; }
    return e;
  }

  function loadAlpha(){ const v=Number(localStorage.getItem(OPACITY_KEY)); if(Number.isFinite(v) && v>=0.2 && v<=1) return v; return 1; }
  function saveAlpha(v){ localStorage.setItem(OPACITY_KEY, String(v)); }
  function applyOpacityTo(el){ const v = loadAlpha(); el.style.setProperty('--jpdbfAlpha', String(v)); el.style.setProperty('--jpdbfBtnOpacity', String(v)); }

  function ensureOpacityUI(){
    if(!floatingEl) return; const hb = floatingEl.querySelector('.hidden-body'); if(!hb) return;
    if(hb.querySelector('.jpdbf-op-row')) return;
    const row = document.createElement('div'); row.className = 'row jpdbf-op-row';
    const rng = document.createElement('input'); rng.type='range'; rng.min='20'; rng.max='100'; rng.step='1'; rng.value=String(Math.round(loadAlpha()*100)); rng.setAttribute('aria-label','Opacity');
    const val = document.createElement('div'); val.className='jpdbf-op-val'; val.textContent = rng.value+'%';
    rng.addEventListener('input', ()=>{ const p=Math.max(20,Math.min(100,Number(rng.value))); val.textContent=p+'%'; const v=p/100; if(floatingEl){ floatingEl.style.setProperty('--jpdbfAlpha',String(v)); floatingEl.style.setProperty('--jpdbfBtnOpacity',String(v)); } saveAlpha(v); });
    row.appendChild(rng); row.appendChild(val); hb.appendChild(row);
    const checkbox = floatingEl.querySelector('#show-checkbox-1'); if (checkbox) { const sync=()=>{ if(checkbox.checked) floatingEl.classList.add('jpdbf-op-open'); else floatingEl.classList.remove('jpdbf-op-open'); }; checkbox.addEventListener('change', sync); sync(); }
  }

  let floatingEl=null, dragging=false, startX=0, startY=0, startLeft=0, startTop=0;
  let vx=0, vy=0, raf=0, lastMoveX=0, lastMoveY=0, lastMoveT=0;
  let rx=null, ry=null, lastKickX=0, lastKickY=0;

  let lastSAEntry=null;
  let grMovedSinceShown=false;
  let grMovedDistance=0;

  let pendingCenter = null;
  let suppressRO = 0;

  let forceSaveEntry=null, forceSaveUntil=0;
  function setForcedSave(entry, ms=1500){
    forceSaveEntry = entry; forceSaveUntil = performance.now() + ms;
    setTimeout(()=>{ if(performance.now() > forceSaveUntil){ forceSaveEntry=null; } }, ms+200);
  }

  const INTERACTIVE='input,button,select,textarea,label,a,[role="button"],[contenteditable="true"]';
  const stopAnim=()=>{ if(raf) cancelAnimationFrame(raf); raf=0; };
  const samples=[];
  const pushSample=(x,y,t)=>{ samples.push({x,y,t}); const cut=t-TUNE.velWindowMs; while(samples.length&&samples[0].t<cut) samples.shift(); };
  function releaseVelocity(){ if(samples.length<2) return {vx:0,vy:0};
    let S1=0,St=0,Sx=0,Sy=0,Stt=0,Stx=0,Sty=0; for(const s of samples){ S1+=1; St+=s.t; Sx+=s.x; Sy+=s.y; Stt+=s.t*s.t; Stx+=s.t*s.x; Sty+=s.t*s.y; }
    const den=(S1*Stt-St*St)||1; let VX=(S1*Stx-St*Sx)/den*1000; let VY=(S1*Sty-St*Sy)/den*1000;
    const sp=Math.hypot(VX,VY); if(sp>6000){ const k=6000/sp; VX*=k; VY*=k; } return {vx:VX,vy:VY}; }

  function writeAndSave(x,y){
    floatingEl.style.left=x+'px'; floatingEl.style.top=y+'px';
    const r=floatingEl.getBoundingClientRect();
    saveFromRect(r);
  }

  function startInertia(initVx,initVy){
    stopAnim(); vx=initVx; vy=initVy; rx=null; ry=null;
    function tick(prev){
      raf=requestAnimationFrame(ts=>{
        const dt=Math.min(0.05,Math.max(0.001,(ts-prev)/1000)), now=performance.now(), f=Math.pow(TUNE.friction,dt*60);
        vx*=f; vy*=f; const r=floatingEl.getBoundingClientRect(); let nx=r.left+vx*dt, ny=r.top+vy*dt;
        const vw=innerWidth,vh=innerHeight; let hitL=false,hitR=false,hitT=false,hitB=false; const preVx=vx,preVy=vy;
        if(nx<0){nx=0;hitL=true} if(nx+r.width>vw){nx=vw-r.width;hitR=true}
        if(ny<0){ny=0;hitT=true} if(ny+r.height>vh){ny=vh-r.height;hitB=true}
        if((hitL||hitR)&&!rx&&(now-lastKickX>140)){const k=Math.max(8,Math.min(36,10+0.006*Math.abs(preVx))); const to=hitL?Math.min(k,vw-r.width):Math.max(vw-r.width-k,0); rx={from:nx,to,t0:now,dur:160}; vx=0; lastKickX=now;}
        if((hitT||hitB)&&!ry&&(now-lastKickY>140)){const k=Math.max(8,Math.min(36,10+0.006*Math.abs(preVy))); const to=hitT?Math.min(k,vh-r.height):Math.max(vh-r.height-k,0); ry={from:ny,to,t0:now,dur:160}; vy=0; lastKickY=now;}
        if(rx){const p=Math.min(1,(now-rx.t0)/rx.dur); nx=rx.from+(rx.to-rx.from)*(1-Math.pow(1-p,3)); if(p>=1) rx=null;}
        if(ry){const p=Math.min(1,(now-ry.t0)/ry.dur); ny=ry.from+(ry.to-ry.from)*(1-Math.pow(1-p,3)); if(p>=1) ry=null;}
        writeAndSave(nx,ny);
        if((vx*vx+vy*vy)<(12*12)&&!rx&&!ry){raf=0;return}
        tick(ts);
      });
    }
    raf=requestAnimationFrame(tick);
  }

  function freezeAndSave(){
    if(!floatingEl) return;
    stopAnim(); rx=null; ry=null;
    const r=floatingEl.getBoundingClientRect();
    if(forceSaveEntry && performance.now() < forceSaveUntil){
      saveEntry(forceSaveEntry);
    }else{
      saveFromRect(r);
    }
  }

  function syncChevronFlag(){
    if(!floatingEl) return;
    const has = !!floatingEl.querySelector('#show-checkbox-1-label.side-button');
    floatingEl.classList.toggle('jpdbf-has-chevron', has);
  }

  function attachDrag(el){
    if(el._jpdbfBound) return; el._jpdbfBound=true;

    el.addEventListener('pointerdown', e=>{
      if(e.button!==0) return;
      if(e.target.closest(INTERACTIVE)) return;
      stopAnim(); rx=null; ry=null; dragging=true;
      const r=el.getBoundingClientRect();
      startX=e.clientX; startY=e.clientY; startLeft=r.left; startTop=r.top;
      grMovedDistance=0;
      samples.length=0; const now=performance.now(); pushSample(e.clientX,e.clientY,now); lastMoveX=e.clientX; lastMoveY=e.clientY; lastMoveT=now;
      e.preventDefault(); try{el.setPointerCapture(e.pointerId);}catch{}
    }, true);

    window.addEventListener('pointermove', e=>{
      if(!dragging) return;
      const r=el.getBoundingClientRect();
      const nx=startLeft+(e.clientX-startX);
      const ny=startTop+(e.clientY-startY);
      const c=clamp(nx,ny,r.width,r.height);
      writeAndSave(c.left,c.top);
      const dx=c.left-startLeft, dy=c.top-startTop;
      const movedNow=Math.hypot(dx,dy);
      if(detectMode(floatingEl)==='gr') grMovedDistance=Math.max(grMovedDistance,movedNow);
      const now=performance.now(); pushSample(e.clientX,e.clientY,now); lastMoveX=e.clientX; lastMoveY=e.clientY; lastMoveT=now;
    });

    window.addEventListener('pointerup', e=>{
      if(!dragging) return;
      dragging=false; try{el.releasePointerCapture(e.pointerId);}catch{}
      const now=performance.now(); pushSample(e.clientX,e.clientY,now);
      if (detectMode(floatingEl)==='gr') {
        grMovedSinceShown = grMovedDistance > TUNE.moveThresh;
      }
      const quietTime=now-lastMoveT; const quietDist=Math.hypot(e.clientX-lastMoveX,e.clientY-lastMoveY);
      if(quietTime>=TUNE.releaseQuietMs && quietDist<=TUNE.releaseQuietPx){ freezeAndSave(); return; }
      const v=releaseVelocity(); startInertia(v.vx,v.vy);
    });

    const subObs = new MutationObserver(()=>syncChevronFlag());
    subObs.observe(el, {childList:true, subtree:true, attributes:true});

    window.addEventListener('resize', ()=>{
      if(!floatingEl) return;
      const st=loadState(); if(!st||!st.pos) return;
      const r0=floatingEl.getBoundingClientRect();
      const p=applyAnchoredPosition(r0.width,r0.height,st.pos);
      writeAndSave(Math.min(Math.max(0,p.left),innerWidth-r0.width), Math.min(Math.max(0,p.top),innerHeight-r0.height));
    });

    document.addEventListener('click', (e)=>{
      if(!floatingEl || !floatingEl.contains(e.target)) return;
      const t=e.target;
      if(t.matches('#show-answer, input[type="submit"][value="Show answer"]')){
        const r=floatingEl.getBoundingClientRect();
        lastSAEntry = entryFromRect(r);
        grMovedSinceShown = false;
        pendingCenter = {
          prevW: r.width, prevH: r.height,
          anchX: isAnchoredX(lastSAEntry), anchY: isAnchoredY(lastSAEntry)
        };
        freezeAndSave();
        return;
      }
      if(t.matches('#show-checkbox-1-label')) setTimeout(ensureOpacityUI, 0);
    }, true);

    document.addEventListener('submit', (e)=>{
      if(!(floatingEl && floatingEl.contains(e.target))) return;
      const mode = detectMode(floatingEl);
      const r = floatingEl.getBoundingClientRect();

      if(mode==='sa'){
        lastSAEntry = entryFromRect(r);
        grMovedSinceShown = false;
        pendingCenter = {
          prevW: r.width, prevH: r.height,
          anchX: isAnchoredX(lastSAEntry), anchY: isAnchoredY(lastSAEntry)
        };
        freezeAndSave();
        return;
      }

      if(mode==='gr'){
        let nextEntry;
        if(!grMovedSinceShown){
          nextEntry = lastSAEntry || entryFromRect(r);
        }else{
          const near = maskNearEdges(r, TUNE.anchorSense);
          if(near.L || near.R || near.T || near.B){
            nextEntry = makePartialAnchorEntry(r, near);
          }else{
            nextEntry = {x:r.left,y:r.top,ax:null,ay:null,offR:0,offB:0,lockL:false,lockR:false,lockT:false,lockB:false};
          }
        }
        setForcedSave(nextEntry);
        pendingCenter = {
          prevW: r.width, prevH: r.height,
          anchX: isAnchoredX(nextEntry), anchY: isAnchoredY(nextEntry)
        };
        freezeAndSave();
        return;
      }
    }, true);

    document.addEventListener('keydown', (e)=>{
      if(!floatingEl || !floatingEl.contains(e.target)) return;
      if(e.key==='Enter') freezeAndSave();
    }, true);

    window.addEventListener('pagehide', freezeAndSave, {capture:true});
    window.addEventListener('beforeunload', freezeAndSave, {capture:true});
    document.addEventListener('visibilitychange', ()=>{ if(document.visibilityState==='hidden') freezeAndSave(); }, {capture:true});
  }

  let sizeObs=null;
  function startSizeObserver(el){
    if(sizeObs) try{sizeObs.disconnect();}catch{}
    sizeObs=new ResizeObserver(()=>{
      if(suppressRO>0){ suppressRO--; return; }
      if(!floatingEl) return;
      const r=el.getBoundingClientRect();
      const st=loadState(); const pos=st&&st.pos?st.pos:null;
      if(!pos) return;
      const c=clamp(r.left,r.top,r.width,r.height);
      el.style.left=c.left+'px'; el.style.top=c.top+'px';
      saveFromRect(el.getBoundingClientRect());
    });
    sizeObs.observe(el);
  }

  function applySaved(el){
    const st=loadState(); const r0=el.getBoundingClientRect();
    if(st&&st.pos){
      const p=applyAnchoredPosition(r0.width,r0.height,st.pos); el.style.left=p.left+'px'; el.style.top=p.top+'px';
      saveFromRect(el.getBoundingClientRect());
    }else{
      const c=clamp(Math.max(0,innerWidth-r0.width-20), Math.max(0,innerHeight-r0.height-20), r0.width, r0.height);
      el.style.left=c.left+'px'; el.style.top=c.top+'px'; saveFromRect(el.getBoundingClientRect());
    }
  }

  function runPendingCenterComp(){
    if(!pendingCenter || !floatingEl) return;
    const r=floatingEl.getBoundingClientRect();
    let nl=r.left, nt=r.top;
    if(!pendingCenter.anchX) nl = r.left - (r.width - pendingCenter.prevW)/2;
    if(!pendingCenter.anchY) nt = r.top  - (r.height - pendingCenter.prevH)/2;
    const c = clamp(nl, nt, r.width, r.height);
    suppressRO = 2;
    floatingEl.style.left=c.left+'px';
    floatingEl.style.top =c.top +'px';
    saveFromRect(floatingEl.getBoundingClientRect());
    pendingCenter=null;
  }

  function floatIt(el){
    if(!el || floatingEl===el) return;
    if(floatingEl && floatingEl.isConnected){
      floatingEl.classList.remove('jpdbf-float','jpdbf-op-open','jpdbf-has-chevron','jpdbf-prehide-target');
      floatingEl.style.left=''; floatingEl.style.top='';
    }
    floatingEl=el;
    try{ el.classList.add('jpdbf-prehide-target'); }catch{}
    el.classList.add('jpdbf-float');
    const hasChevron = !!el.querySelector('#show-checkbox-1-label.side-button');
    el.classList.toggle('jpdbf-has-chevron', hasChevron);
    applySaved(el);
    applyOpacityTo(el);
    attachDrag(el);
    startSizeObserver(el);
    if(detectMode(el)==='gr') ensureOpacityUI();
    if (window.__jpdbf_unhideJPDB) window.__jpdbf_unhideJPDB(el);
    requestAnimationFrame(()=>{ runPendingCenterComp(); });
    setTimeout(()=>{ runPendingCenterComp(); }, 120);
  }

  function boot(){ const c=findMenu(); if(c) floatIt(c); }
  new MutationObserver(()=>{ boot(); }).observe(document.documentElement,{childList:true,subtree:true});
  let lastHref=location.href;
  setInterval(()=>{ if(location.href!==lastHref){ lastHref=location.href; boot(); } }, 300);
  boot(); setTimeout(boot, 400);
})();