Collapsible Sections

$w.onReady(function () {     $w('#newYorkCollapseButton').onClick(() => {         toggleBox($w('#newYorkCollapsibleBox'), $w('#newYorkPlusSign'), $w('#newYorkMinusSign'));     });      $w('#tokyoCollapseButton').onClick(() => {         toggleBox($w('#tokyoCollapsibleBox'), $w('#tokyoPlusSign'), $w('#tokyoMinusSign'));     });      $w('#parisCollapseButton').onClick(() => {         toggleBox($w('#parisCollapsibleBox'), $w('#parisPlusSign'), $w('#parisMinusSign'));     }); });  function toggleBox(boxElement, plusSign, minusSign) {     const isCollapsed = boxElement.collapsed;     if (isCollapsed) {         plusSign.hide();         minusSign.show();         boxElement.expand();     } else {         minusSign.hide();         plusSign.show();         boxElement.collapse();     } }