RegExp not working

[Charles Goodwin]

<vexi xmlns:ui="vexi://ui">

    static.trim = function(str) { return str.replace(vexi.regexp("/^\s+|\s+$/",'g'),""); }
    static.trimleft = function(str) { return str.replace(vexi.regexp("/^\s+/",'g'),""); }
    static.trimright = function(str) { return str.replace(vexi.regexp("/\s+$/",'g'),""); }

    <ui:box>
        var test = " test ";
        var show = function(f) { vexi.log.info("'"+static[f](test)+"'"); }
        show("trim");
        show("trimleft");
        show("trimright");
    </ui:box>
</vexi>

Output:
                16: ' test '
                16: ' test '
                16: ' test '

Expected:
                16: 'test'
                16: 'test '
                16: ' test'