I am using this JavaScript function in order to change image on click, but it is doing refresh all the time and go back to the original image. 

this is the code I am using;

```
function showImage1() {; 
    document.getElementById('Image5').style.visibility = 'visible';
    document.getElementById('Img1').style.visibility = 'hidden';
}

<div>
    <input ID="Button1" type="image" src=" Resources/Icons/benefitBtn.png" OnClick="showImage1();"/>
</div>

```

Any suggestion please?