User:Arjunaraoc/vector.js

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The accompanying .css page for this skin is at User:Arjunaraoc/vector.css.

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function AppendCategoryTreeToSidebar() {
    try {
        var node = document.getElementById( "p-tb" )
                           .getElementsByTagName('div')[0]
                           .getElementsByTagName('ul')[0];
 
        var aNode = document.createElement( 'a' );
        var liNode = document.createElement( 'li' );
 
        aNode.appendChild( document.createTextNode( 'CategoryTree' ) );
        aNode.setAttribute( 'href' , '[[w:en:Category:contents]]' );
        liNode.appendChild( aNode );
        liNode.className = 'plainlinks';
        node.appendChild( liNode );
    } catch(e) {
        // lets just ignore what's happened
        return;
    }
}
 
$( AppendCategoryTreeToSidebar );