Percentages

[maxkatz]

You also need to resize the parent div element.

[Appmos]

The container, right? I need to insert the name of the class (resize) in the class name field, correct? If yes, I've done that and it didn ́t work

[maxkatz]

You can increase the container size like this, on page load:
$('.mobileimageX_div').css('width', '200');

[Appmos]

I applied a custom JavaScript with code that you suggested, to run after loading the screen, but nothing happens. I can ́t understand why not have options to resize elements inside the panel using percentage values. It seems that just me that I need this feature. It ́s very hard for very little. Anyway, thank you by the effort.

[maxkatz]

This is my class:
code
.resize {
width: 100% !important;
}
/code

and this is what I run on page load:
code
$('.mobileimage1_div').css('width', '200');
/code

the image number above for you might be different, you need to look in the source.

[Appmos]

Is the same name and the same way that I did (custom javascript = screen load event)

[maxkatz]

You should debug with Firebug or Chrome Developer Tools -- and see why it's not working.

[Appmos]

Could you create a simple example, a single screen with half of it with a image and another half with a video, both resizable? So I could import to my panel and study this example. This way would be easier to understand the procedure and I could apply it to all my projects.

[maxkatz]

You can change size but it won't be automatically resizable. To change size automatically, you would need to determine screen size in runtime and update the components accordingly.