var debug = function( string )
{
    this.turn = function( type )
    {
        var list = stardust.getElementsByTagName('div', $('div_debug'));
        for(k in list)
        {
            list[k].style.display = (list[k].className==type)? 'block':'none';
        }
    }
    
    this.close = function()
    {
        var list = stardust.getElementsByTagName('div', $('div_debug'));
        for(k in list)
        {
            list[k].style.display = 'none';
        }
    }
    
    if( $('div_debug')==undefined )
    {
        var div = stardust.createTag('div', {id:'div_debug',background:'red',border:'5px solid red',textAlign:'left',textSize:'10px'});
        document.body.insertBefore(div, document.body.childNodes[0] );
    }
    $('div_debug').innerHTML = $('div_debug').innerHTML + string;
}