You can probably update the script so that the code is called in series instead of at the same time to avoid the problem. I imagine you just need to write a little client side script to avoid a conflict problem like this.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.