Sul SEO ho effettivamente risolto seguendo il tuo consiglio.
Però gli errori di validazione permangono:
Validation Output: 26 Errors Line 83, Column 91: & did not start a character reference. (& probably should have been escaped as &.) …"http://www.lsnr.it/index.php?option=com_contact&view=contact&id=1&Itemid=112"> ✉
Line 83, Column 104: & did not start a character reference. (& probably should have been escaped as &.) …"http://www.lsnr.it/index.php?option=com_contact&view=contact&id=1&Itemid=112"> ✉
Line 83, Column 109: & did not start a character reference. (& probably should have been escaped as &.) …"http://www.lsnr.it/index.php?option=com_contact&view=contact&id=1&Itemid=112"> ✉
Line 88, Column 444: Attribute value not allowed on element input at this point. …click="this.form.searchword.focus();"/> <input type="hidden" name="task" v… Attributes for element input:Global attributesaccept when type is filealt when type is imageautocomplete when type is text, search, url, tel, e-mail, password, datetime, date, month, week, time, datetime-local, number, range, or colorautofocuschecked when type is checkbox or radiodirname when type is text or searchdisabledformformaction when type is submit or imageformenctype when type is submit or imageformmethod when type is submit or imageformnovalidate when type is submit or imageformtarget when type is submit or imageheight when type is imagelist when type is text, search, url, tel, e-mail, datetime, date, month, week, time, datetime-local, number, range, or colormax when type is datetime, date, month, week, time, datetime-local, number, or rangemaxlength when type is text, search, url, tel, e-mail, or passwordmin when type is datetime, date, month, week, time, datetime-local, number, or rangemultiple when type is email or filenamepattern when type is text, search, url, tel, e-mail, or passwordplaceholder when type is text, search, url, tel, e-mail, password, or numberreadonly when type is text, search, url, tel, e-mail, password, datetime, date, month, week, time, datetime-local, or numberrequired when type is text, search, url, tel, e-mail, password, datetime, date, month, week, time, datetime-local, number, checkbox, radio, or filesize when type is text, search, url, tel, e-mail, or passwordsrc when type is imagestep when type is datetime, date, month, week, time, datetime-local, number, or rangetypevalue when type is not file or imagewidth when type is image Line 88, Column 444: Element input is missing required attribute alt. …click="this.form.searchword.focus();"/> <input type="hidden" name="task" v… Attributes for element input:Global attributesaccept when type is filealt when type is imageautocomplete when type is text, search, url, tel, e-mail, password, datetime, date, month, week, time, datetime-local, number, range, or colorautofocuschecked when type is checkbox or radiodirname when type is text or searchdisabledformformaction when type is submit or imageformenctype when type is submit or imageformmethod when type is submit or imageformnovalidate when type is submit or imageformtarget when type is submit or imageheight when type is imagelist when type is text, search, url, tel, e-mail, datetime, date, month, week, time, datetime-local, number, range, or colormax when type is datetime, date, month, week, time, datetime-local, number, or rangemaxlength when type is text, search, url, tel, e-mail, or passwordmin when type is datetime, date, month, week, time, datetime-local, number, or rangemultiple when type is email or filenamepattern when type is text, search, url, tel, e-mail, or passwordplaceholder when type is text, search, url, tel, e-mail, password, or numberreadonly when type is text, search, url, tel, e-mail, password, datetime, date, month, week, time, datetime-local, or numberrequired when type is text, search, url, tel, e-mail, password, datetime, date, month, week, time, datetime-local, number, checkbox, radio, or filesize when type is text, search, url, tel, e-mail, or passwordsrc when type is imagestep when type is datetime, date, month, week, time, datetime-local, number, or rangetypevalue when type is not file or imagewidth when type is image Line 110, Column 106: Bad value imgmap201361214226 for attribute usemap on element img: A hash-name reference must start with #. …NUOVO.png" alt="SOTTONUOVO" usemap="imgmap201361214226" border="0" /></p></div> Syntax of hash-name reference:A # (number sign) character followed by any string. Line 110, Column 106: The border attribute is obsolete. Consider specifying img { border: 0; } in CSS instead. …NUOVO.png" alt="SOTTONUOVO" usemap="imgmap201361214226" border="0" /></p></div> ✉
Line 152, Column 68: The headers attribute on the element td refers to the ID categorylist_header_title, but there is no th element with that ID in the same table. <td headers="categorylist_header_title" class="list-title"> ✉
Line 156, Column 78: The headers attribute on the element td refers to the ID categorylist_header_hits, but there is no th element with that ID in the same table. <td headers="categorylist_header_hits" class="list-hits"> ✉
Line 162, Column 68: The headers attribute on the element td refers to the ID categorylist_header_title, but there is no th element with that ID in the same table. <td headers="categorylist_header_title" class="list-title"> ✉
Line 166, Column 78: The headers attribute on the element td refers to the ID categorylist_header_hits, but there is no th element with that ID in the same table. <td headers="categorylist_header_hits" class="list-hits"> ✉
Line 172, Column 68: The headers attribute on the element td refers to the ID categorylist_header_title, but there is no th element with that ID in the same table. <td headers="categorylist_header_title" class="list-title"> ✉
Line 176, Column 78: The headers attribute on the element td refers to the ID categorylist_header_hits, but there is no th element with that ID in the same table. <td headers="categorylist_header_hits" class="list-hits"> ✉
Line 182, Column 68: The headers attribute on the element td refers to the ID categorylist_header_title, but there is no th element with that ID in the same table. <td headers="categorylist_header_title" class="list-title"> ✉
Line 186, Column 78: The headers attribute on the element td refers to the ID categorylist_header_hits, but there is no th element with that ID in the same table. <td headers="categorylist_header_hits" class="list-hits"> ✉
Line 192, Column 68: The headers attribute on the element td refers to the ID categorylist_header_title, but there is no th element with that ID in the same table. <td headers="categorylist_header_title" class="list-title"> ✉
Line 196, Column 78: The headers attribute on the element td refers to the ID categorylist_header_hits, but there is no th element with that ID in the same table. <td headers="categorylist_header_hits" class="list-hits"> ✉
Line 202, Column 68: The headers attribute on the element td refers to the ID categorylist_header_title, but there is no th element with that ID in the same table. <td headers="categorylist_header_title" class="list-title"> ✉
Line 206, Column 78: The headers attribute on the element td refers to the ID categorylist_header_hits, but there is no th element with that ID in the same table. <td headers="categorylist_header_hits" class="list-hits"> ✉
Line 212, Column 68: The headers attribute on the element td refers to the ID categorylist_header_title, but there is no th element with that ID in the same table. <td headers="categorylist_header_title" class="list-title"> ✉
Line 216, Column 78: The headers attribute on the element td refers to the ID categorylist_header_hits, but there is no th element with that ID in the same table. <td headers="categorylist_header_hits" class="list-hits"> ✉
Line 222, Column 68: The headers attribute on the element td refers to the ID categorylist_header_title, but there is no th element with that ID in the same table. <td headers="categorylist_header_title" class="list-title"> ✉
Line 226, Column 78: The headers attribute on the element td refers to the ID categorylist_header_hits, but there is no th element with that ID in the same table. <td headers="categorylist_header_hits" class="list-hits"> ✉
Line 232, Column 68: The headers attribute on the element td refers to the ID categorylist_header_title, but there is no th element with that ID in the same table. <td headers="categorylist_header_title" class="list-title"> ✉
Line 236, Column 78: The headers attribute on the element td refers to the ID categorylist_header_hits, but there is no th element with that ID in the same table. <td headers="categorylist_header_hits" class="list-hits"> ✉
Line 242, Column 68: The headers attribute on the element td refers to the ID categorylist_header_title, but there is no th element with that ID in the same table. <td headers="categorylist_header_title" class="list-title"> ✉
Line 246, Column 78: The headers attribute on the element td refers to the ID categorylist_header_hits, but there is no th element with that ID in the same table.