Complete automatization of Javascript code in browser.

Hi. I need some professional help. I got a script in Javascript that does some useful work and is working correctly. But I need to make some modifications of it that require good knowledge and experience of programming. You see I'm not an expert in Javascript. It took me 2 weeks to write the code that I have now because I started with zero knowledge of Javascript. Time is the matter. This is why I decided it is better to cooperate with professionals like you. Though I have now main knowledge and 90% of the script is already written there are few more things to fix. Eg. I need it to run in a loop, but I can't make it work in for(***){N} loop [where N is my properly working script]. Other thing is that I need to replace part of the code so that it deletes all cookies from current document. And I need it to relogin automatically when the cookie is expired and I'm thrown out of site. And so on. The steps are easy for professional programmer. I'll give more needed information about tasks on private. The result of work is the script in Javascript that can be working for many hours or days handling all errors by itself, so it doesn't need any human inrerference. I'd like to emphasize again that the core, that does actual work, is already done. What is needed to be changed is to make it work alone non-stop for a long time so I don't have to control it. And I need support, so once I run the script if something goes wrong I can contact you and you will help me to fix it. The creation will be from a simple to complex, step by step, so that eventually well working product is done. The length of the project is one month that I think should be enough to face all possible bugs and not too little to miss something. It can be less then one month, but it's not one-day project. Once the product is made and I'm sure there are no other bugs appearing, once I see it works without need to be controled - work is done and you get awarded. So if you are interested in this work please bid. I would like to work with you.