Edit config.pl for enabling youtube embed code to be pasted in Formatting:HTML mode

use constant ALLOWED_HTML => (

    'a'=>{args=>{'href'=>'url'},forced=>{'rel'=>'nofollow'}},
    'object'=>{forced=>{'width'=>'425','height'=>'350'}},
    'param'=>{args=>{'value'=>'url'},forced=>{'name'=>'movie'}},
    'embed'=>{args=>{'src'=>'url'},forced=>{'type'=>'application/x-shockwave-flash','wmode'=>'transparent','width'=>'425','height'=>'350'}},
    'b'=>{},'i'=>{},'u'=>{},'sub'=>{},'sup'=>{},
    'em'=>{},'strong'=>{},
    'ul'=>{},'ol'=>{},'li'=>{},'dl'=>{},'dt'=>{},'dd'=>{},
    'p'=>{},'br'=>{empty=>1},'blockquote'=>{},

);