var BASE_RES_Y = 768;
var BASE_OFFSET = 0;
var STD_DIFF = window.screen.height - BASE_RES_Y;

function adaptHeight(obj, diff)
{
    adaptObj(obj, diff, "Height");
}

function adaptTop(obj, diff)
{
    adaptObj(obj, diff, "Top");
}

function adaptObj(obj, diff, style)
{
    if (style != null)
    {
        var tot = diff != null ? diff : (STD_DIFF - BASE_OFFSET);
        if (tot > 0)
        {        
            var o = getObj(obj);
            
            if (o != null)
                o.style[style.toLowerCase()] = eval("o.offset" + style) + tot + "px";
        }
    }
}