I want to link the drop down menu to a button embedded in the main page.

[Lizpellow]

I have a button embeded in an image that says 'check out our product range'. Instead of clicking this button and going to another page, I want to click this button and the product menu opens automatically from the header.

This is the button I want to push and I want it to open the menu in the image below.

This image shows all the options on the one page. 

Thanks for your help.

[wo]

Add js code to theme.liquid file 

<script>
var btn = document.querySelector('.slideshow-button');
var menu = document.querySelector('#products_toggle');
var submenu =document.querySelector('.navmenu-meganav-item-parent .navmenu-submenu');
btn.addEventListener('click',function(e){
    e.preventDefault();
    menu.classList.add('navmenu-active');
    submenu.classList.add('visible');
});
</script>