// are we in the right place?
if ( location.href.indexOf( 'etsy.com/create_listing2.php' ) >- 1 ) {
    if ( s = prompt( 'Tags', '' ) ) {
        // we have tags, turn them into an array
        t = s.split( /, \s*/ );
        // set up some short references
        d = document;
        f = d.forms[1];
        y = t[ 0 ].replace( / /g, '_' ); // copy of first tag to match drop-down box's values
        s = f.getElementsByTagName( 'select' )[ 0 ];
        x = 0; // starting index in t array for regular tags
        if( s.selectedIndex < 1 ) {
            // we don't have a first tag selected on the page
            // deal with it differently
            u = s.options;
            for( o = 0; o < u.length; o++ ) {
                if( u[ o ].value == y ) {
                    // found it in the main categories list
                    s.selectedIndex = o;
                    mainCategorySelector( y )
                }
            }
            x++; // start with the next tag
        }
        // loop through the tags, adding them
        for( a=x; a < t.length; a++ ) addTag( t[ a ] )
    }
}