iframe shows in Mozilla 2, but not in IE 6

This is the code:

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%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0D%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0D%0A%3Cp
%3E%26nbsp%3B%3C%2Fp%3E%0D%0A%3C%2Ffont%3E%3C%2Fspan%3E%3C%2Fp%3E%0D%0A
%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0D%0A%3C%2Fspan%3E%3C%2Fp%3E%0D%0A%3Cp%3E
%26nbsp%3B%3C%2Fp%3E%0D%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0D%0A%3Cp%3E
%26nbsp%3B%3C%2Fp%3E" name=3D"scroll" marginwidth=3D"10"
marginheight=3D"10"width=3D"500" height=3D"200"
frameborder=3D"1"></iframe>

In IE the iframe box doesn=B4t even show, but it takes up space. In
Mozilla the iframe box shows with text and scrollbar.

What do I have to do to get it to show in IE?

Kind regards,

Jan Nordgreen