Errores de validación en mi web

[Scape]

Hola, escribo porque tengo algunos errores de validación en mi web que no acabo de entender,

Error Line 92, Column 14: an attribute value must be a literal unless it contains only name characters

<script type=”text/javascript”>

You have used a character that is not considered a "name character" in an attribute value.

¿ Que error puede haber aquí?

Line 132, Column 27: there is no attribute "scrolling"

<iframe scrolling="no" src="https://miweb.com

You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element.


element "u" undefined

…ot-on/id501657395?mt=8" title="iPhone" target="_blank"><u>iPhone


Alguien sabe explicarme un poco estos ejemplos para poder cambiarlos?

Gracias!