$w.onReady(()=>{
$w('#yourRepeaterIDhere').onItemready(($item, itemData, index)=>{
$item('#container5').onMouseIn(()=> {
toggleBox($item('#box9'));
});
$item('#container5').onMouseOut(() => {
toggleBox($item('#box9'));
});
});
});
function toggleBox(boxElement){
if (boxElement.collapsed) {boxElement.expand();}
else {boxElement.collapse();}
}