Txt loads "too fast"

i’m loading several txt files into a dynamic text box (one at a time). i made a small rectangle above the text box which fades it’s alpha value so it looks like the text box is fading in. hope you understand this.

the problem is the txt is shown for like 0.10 seconds before the above fadin animation starts. how can i bypass this problem? i have attached the files so you see the problem yourself. only the first 2 website txt work. keep the files in their folders to make it work

hope somebody can help…if you need further info, let me know