Help with scrollbars for loaded text displaying when not needed

hi guys, once again im in here asking something which might be trivial but is driving me insane: im loading external text files and the scrollbar appears or not depending on the length of the text, its all working nicely, EXCEPT for the scrollbars being displayed before the text loads, or even if theyre not needed they appear for a fraction of a second.
they show up in this website im working on ,its on the texts on the right hand next to the images once you click to see any of the projects, heres the website: www.aumstudio.org
the code im using is the following:

loadText = new LoadVars();
loadText.onLoad = function(success){
if(success){
scroller.html = true;
scroller.htmlText = this.var1;
my_scrollbar._visible = scroller.maxscroll !=1 ? true : false;
}
};
loadText.load(“externaltexthere.txt”);

anyone has any ideas? :h: thanks in advance
>.<