var components = new Array("component_projector_opinions","component_projector_photos","component_projector_longdescription","component_projector_ordered","component_projector_associated","component_projector_incategory","component_projector_suggestproduct","component_projector_askforproduct");

function showButtons()
{
    var i = 0;
    var activeButtons = components.length;
    for (i = 0; i < components.length; i++) {
        if (document.getElementById(components[i])) {
            document.getElementById('projector_components_hidding').style.display = 'block';
            if (document.getElementById('hide_'+components[i])) {
                document.getElementById('hide_'+components[i]).style.display = 'block';
            }
        }
    }
    setTimeout("showButtons()", 2000);
}

function components_hidding(component)
{
    if (document.getElementById(component) ) {
        for (i = 0; i < components.length; i++) {
            if (document.getElementById(components[i]) ) {
                document.getElementById(components[i]).style.display = 'none';
            }
        }
        document.getElementById(component).style.display = 'block';
    }
}
showButtons();