browser resizing problem

[sweetysweety]

hi,

i have a website:

http://www.terranartworks.com/testsite/tsv1/index.html

i'm trying to positioning the red point,when browser resized.but i couldn't find how to do this.it has not a stable position,it will position when user clicks button.so how can i position this element,while browser became bigger or smaller.i mean that after the browser's opening and clicking one of three buttons and then browser resizing.