FIREFOX coder with high experience for solving javascript popup window issue

FIREFOX coder with high experience for solving javascript popup window issue . I am visiting websites that only allow insertion of link in a word if i do the following steps: 1) select the word (or words) 2) click on "rich text editor" which opens in a POP-UP window (javascript) 3) Enter the url that the word/link should point to 4) click ok. Need a coder who can demonstrate an automated solution to this issue. Please write if you have solved this problem already for FIREFOX browser. wil give list of examples of sites to qualified coders