function showHideLeft() {
    $('leftCol').toggle();
    $('mainCol').toggleClassName('extended');
    $('seperator').toggleClassName('collapsed');
}

function setHeightObservers() {
    mainH = $('mainCol').getHeight()
    $('seperator').setStyle({ "height": mainH + 'px' })
    $('seperator').observe('click', showHideLeft);
}

function alertName(name) {
    alert(name);
}

function showHow(divName) {
    dvName = (divName != undefined) ? divName : 'showHowTo';
    addVideoComponent.dialog.setUsingAppendChild($(dvName));
    addVideoComponent.dialog.show();
}