I received an error that said, "Line 1: Syntax Error." I kept debugging the error, but I didn't think the document definition was causing the error. In the end, I found another developer on the project, had an onmouseover event getting set into a div on via the innerhtml property that included something like onmouseover='somefunction(someobject,'',someotherobject);'. It wasn't quite that simple, but essentially it was too long to find. Unfortunately, the debugging isn't what it should be and the developer didn't test his work.