# 'p5 WEB' sometimes does not show

**URL:** <https://discourse.processing.org/t/p5-web-sometimes-does-not-show/41373>\
**Category:** Coding Questions\
**Created:** [March 21, 2023, 1:28am UTC](https://discourse.processing.org/t/p5-web-sometimes-does-not-show/41373 "2023-03-21T01:28:54Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![GWAK](https://avatars.discourse-cdn.com/v4/letter/g/13edae/32.png) [@GWAK](https://discourse.processing.org/u/GWAK)\
**Post date:** [March 21, 2023, 1:28am UTC](https://discourse.processing.org/t/p5-web-sometimes-does-not-show/41373/1 "2023-03-21T01:28:54Z")

</div>

‘p5 WEB’ sometimes does not show.

 ![fig](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/3X/1/2/12ed724f60762d84f6ffd17281a8ec5b92eb6034.jpeg)

```auto
//-> setup
var cbox;
cbox = select('#map_div'); cbox.position(10,160); cbox.hide();
//-> button event
cbox.show();

```

When the ‘cbox.show()’ operation is performed, the map should be visible, but sometimes it is not visible. Why?  
It is invisible, but can be seen by moving the ‘mouse-wheel’ over the area.

1. I used ‘show’, but the map is not visible.
2. If you use the ‘mouse-wheel’ on that area, the map will be visible.  
Why? What’s the matter?