flashvars
Adobe Flash use an extension to embed called flashvars. IT in not in the official W3C liste.
HTML Validator does note like it.
Error in line 45 at character 478: The "flashvars" attribute is not valid for the "embed" element. Some valid attributes for this element are: "accesskey", "align", "allowfullscreen", "allowscriptaccess", "alt", "autoplay", "autostart", "base", "bgcolor", "border", "class", "contenteditable", "contextmenu", "controls", "dir", "draggable", "dropzone", "frameborder", "height", "hidden", "hidefocus", "hspace", "id", "lang", "logo", "loop", "menu", "name", "palette", "play", "pluginspage", "progress", "quality", "role", "scale", "song", "spellcheck", "src", "style", "swliveconnect", "swremote", "swstretchhalign", "swstretchstyle", "swstretchvalign", "tabindex", "title", "type", "units", "unselectable", "volume", "vspace", "width", "wmode", "xml:space", "on" attributes (like event handlers), "aria-*" attributes, and "item*" attributes.
It is quite commonly used.
However, I cannot suppress the error message in any way.
HTML Validator does note like it.
Error in line 45 at character 478: The "flashvars" attribute is not valid for the "embed" element. Some valid attributes for this element are: "accesskey", "align", "allowfullscreen", "allowscriptaccess", "alt", "autoplay", "autostart", "base", "bgcolor", "border", "class", "contenteditable", "contextmenu", "controls", "dir", "draggable", "dropzone", "frameborder", "height", "hidden", "hidefocus", "hspace", "id", "lang", "logo", "loop", "menu", "name", "palette", "play", "pluginspage", "progress", "quality", "role", "scale", "song", "spellcheck", "src", "style", "swliveconnect", "swremote", "swstretchhalign", "swstretchstyle", "swstretchvalign", "tabindex", "title", "type", "units", "unselectable", "volume", "vspace", "width", "wmode", "xml:space", "on" attributes (like event handlers), "aria-*" attributes, and "item*" attributes.
It is quite commonly used.
However, I cannot suppress the error message in any way.