function unverified() {

    // Find the edit box
    var txt = document.editform.wpTextbox1;

    // The tag to be included is an unverified image template
    var tag = '\u007b\u007b' + 'unverified' + '\u007d\u007d';

    // If the edit box doesn't already have this tag...
    if (txt.value.indexOf(tag) == -1) {

        // Append the tag
        txt.value += tag;
        
        // Add an edit summary
        document.editform.wpSummary.value = 'Needs a source and copyright tag — see [[Wikipedia:Image copyright tags]]';    

        // Press the Save page button
        document.editform.submit();
    } 

    // If the tag was already there, turn the tab background red to indicate 
    // that the script is functioning properly, but that there is no action 
    // to do.  This doesn't interrupt the user's work like an alert() would.
    else {
        document.getElementById('ca-unverified').firstChild.style.backgroundColor = "#ff4444";
        document.getElementById('ca-unverified').style.backgroundColor = "#ff4444";
    }
}

// Create a tab that calls this function when pressed
$(function () {
    if(document.title.indexOf("Editing Image:") == 0) {
        mw.util.addPortletLink('p-cactions', 'javascript:unverified()', 'tag', 'ca-unverified', 'Adds a tag to an unverified image', '', '');
    }
});