|------------------------------------------------------------------------------------|
|     hauptseite mit onmousemove=function(e) { ... }|
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|                                    |-------------------------------------|         |
|                                    |  iframe mit                  |         |
|                                    | onmousemove=          |         |
|                                    | function(e){ .... }        |         |
|                                    |                                     |         |
|                                    |                                     |         |
|                                    |                                     |         |
|                                    |-------------------------------------|         |
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|------------------------------------------------------------------------------------|