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You can set up a link like this: <a onclick="add_child(this);"> The add_child function will take a parameter, which will be the element that you clicked on. You can use the DOM methods and properties to insert the new node after the one you clicked on. Javascript doesn't have an insertAfter method, but it has insertBefore and a nextSibling property. So your link will need to have at least one element after it (even if it's hidden and doesn't show anything), but you can do something like this:

function add_child(link){  var new_link = document.createElement('a');  new_link.innerHTML = 'new child';  link.parentNode.insertBefore(new_link, link.nextSibling);}

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