Scaling question

I created a simle script for a webpage I'm working on that updates a
small div of text every so often.  The text varies greatly in length,
so I would rather use an effect so the div collapses->the text is
updated-> the div uncollapses.  My code below, however, doesn't work. 
After testing, I realize that it isn't scaling to 100% of the text
height, but 100% of another value.  What would be the best way to fix
this?

My code:
            var offset = 0;
            function fadeIn(r)
            {  $("currentaside").innerHTML = r.responseText;
               new Effect.Scale("currentaside", 100.0, {scaleX: false,
scaleFrom: 50, scaleContent: false});
            }
            function getData()
            {
               new Ajax.Request("./aside.php?fromcat=2&offset=" +
offset, {onComplete: fadeIn});
            }
            function refresh()
            {  offset++;
               new Effect.Scale("currentaside", 50, {scaleX: false,
afterFinish: getData, scaleFrom: 100, scaleContent: false});
            }
            getData();
            new PeriodicalExecuter (refresh, 10);