I found out what's happening: Arithmetics are a bit different in both runtimes: DHTML: null / 100 = 0 SWF: null / 100 = NaN
So in swf, the slider's value gets set to "NaN", that's why it is endless recursing as "NaN != NaN" always evaluates to true. (Actually, when I type into the debugger in swf: "NaN != NaN" it evaluates to "false", but if I use: "0/0 != 0/0", I get the right result, therefore "true". Does anybody know what's happening here?)
