Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “citytitle” not allowed on element “input” at this point.
Attribute “citycode” not allowed on element “input” at this point.
Attribute “slideid” not allowed on element “input” at this point.
Attribute “citytitle” not allowed on element “div” at this point.
Attribute “citycode” not allowed on element “div” at this point.
Duplicate attribute “src”.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Attribute “p-acc” not allowed on element “li” at this point.
Attribute “c-acc” not allowed on element “li” at this point.
Attribute “p-amm” not allowed on element “li” at this point.
Attribute “c-amm” not allowed on element “li” at this point.
Attribute “p-bkk” not allowed on element “li” at this point.
Attribute “c-bkk” not allowed on element “li” at this point.
Attribute “p-han” not allowed on element “li” at this point.
Attribute “c-han” not allowed on element “li” at this point.
Attribute “p-ika” not allowed on element “li” at this point.
Attribute “c-thr” not allowed on element “li” at this point.
Attribute “p-led” not allowed on element “li” at this point.
Attribute “c-led” not allowed on element “li” at this point.
Attribute “p-lhr” not allowed on element “li” at this point.
Attribute “c-lon” not allowed on element “li” at this point.
Attribute “p-los” not allowed on element “li” at this point.
Attribute “c-los” not allowed on element “li” at this point.
Attribute “p-mnl” not allowed on element “li” at this point.
Attribute “c-mnl” not allowed on element “li” at this point.
Attribute “p-muc” not allowed on element “li” at this point.
Attribute “c-muc” not allowed on element “li” at this point.
Attribute “p-nbo” not allowed on element “li” at this point.
Attribute “c-nbo” not allowed on element “li” at this point.
Attribute “p-tlv” not allowed on element “li” at this point.
Attribute “c-tlv” not allowed on element “li” at this point.
Attribute “cityname” not allowed on element “li” at this point.
Attribute “code” not allowed on element “li” at this point.
Attribute “p-lgw” not allowed on element “li” at this point.
Attribute “p-stn” not allowed on element “li” at this point.
Duplicate ID “slideshow_Asia_key”.
Duplicate ID “slideshow_Europe_key”.
Duplicate ID “slideshow_Africa_key”.
Duplicate ID “slideshow_MiddleEast_key”.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
Attribute “flightstype” not allowed on element “input” at this point.
Element “option” without attribute “label” must not be empty.
Duplicate ID “Hidden1”.
Attribute “name” not allowed on element “label” at this point.
Bad value “faq_air-faq_airlines-faq_aircraft_cabins_explained” for attribute “rel” on element “a”: The string “faq_air-faq_airlines-faq_aircraft_cabins_explained” is not a registered keyword.
Named character reference was not terminated by a semicolon. (Or “&” should have been escaped as “&”.)
Any “input” descendant of a “label” element with a “for” attribute must have an ID value that matches that “for” attribute.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The first occurrence of ID “slideshow_Asia_key” was here.
The first occurrence of ID “slideshow_Europe_key” was here.
The first occurrence of ID “slideshow_Africa_key” was here.
The first occurrence of ID “slideshow_MiddleEast_key” was here.
The first occurrence of ID “Hidden1” was here.
Empty heading.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.