Expanding a Scroll bar

programming flash
1

I have built in some accessibility to one of my flash websites where you can increase the size using a Combobox - the problem is when I expand it to font size 18 the font obviously goes over the textfield and the scroll bar doesn’t increase to compensate for this!

The code I am using is:


function dropdown_check() {

	if (textDD.getValue() == 1) {

		var format:TextFormat = new TextFormat();
		format.size = 12;
		_root.content_txt.setTextFormat(format);
		_root.content_txt.setTextFormat(format);
		_root.title_txt.setTextFormat(format);
		_root.title_txt.setTextFormat(format);
		

	} else if (textDD.getValue() == 2) {

		var format:TextFormat = new TextFormat();
		format.size = 14;
		_root.content_txt.setTextFormat(format);
		_root.content_txt.setTextFormat(format);
		_root.title_txt.setTextFormat(format);
		_root.title_txt.setTextFormat(format);


	} else if (textDD.getValue() == 3) {

		var format:TextFormat = new TextFormat();
		format.size = 16;
		_root.content_txt.setTextFormat(format);
		_root.content_txt.setTextFormat(format);
		_root.title_txt.setTextFormat(format);
		_root.title_txt.setTextFormat(format);
		


	} else if (textDD.getValue() == 4) {

		var format:TextFormat = new TextFormat();
		format.size = 18;
		_root.content_txt.setTextFormat(format);
		_root.content_txt.setTextFormat(format);
		_root.title_txt.setTextFormat(format);
		_root.title_txt.setTextFormat(format);

	}
}
//Check the status of the dropdown every ten miliseconds.
setInterval(dropdown_check,10);

textDD.onChanged = function() {
	content_txt.text.scroll++;
	if (content_txt.text>maxscroll) {
		trace("I need to get bigger");
	}
};

Any help would be great thanks!