# File ValidForm_html.rb, line 36
        def hashes_toattributes(*hashes)
                html=""
                hashes.each{ |hash|
                        hash.each{ |key,val|
                                next unless key && key!='' && val!=nil && val!=''
                                keyS = key.to_s
                                valS = val.to_s
                                raise "id '#{valS}' is not a legal XML identifier." if keyS.downcase=='id' && !/^[a-z_]\w*$/.match(valS)
                                html << %{ #{keyS}="#{CGI.escapeHTML(valS)}"}
                        }
                }
                html
        end