Validations Show different Results when done through Javascript and when done by Direct Input on W3C website

Hi,

Requirement:
I have a scenario wherein I need to validate some html content placed inside a RadEditor Content Area on a SharePoint Portal Page (Content attached with this email). The content intentionally does not contain  a DocType Declaration.

Issue:
For this I have opted to use W3C validation and called it through javascript as mentioned below:

    var encodedContent = getRadWindow().ClientParameters;                                                                      // This gets the HTML content inside the RadEditor Content Area
    xmlHttp = CreateXMLHttpRequest();                                                                                                                   // Create XMLHttpObject for calling the webservice
    var params = "fragment=" + encodedContent ;                                                                                              // Output the result in HTML format
    xmlHttp.open("POST", "http://validator.w3.org/check", false);
    xmlHttp.setRequestHeader("Content-length", params.length)
    xmlHttp.send(params);
    document.getElementById('mainContentDiv').innerHTML = xmlHttp.responseText;                   // Display the result on the screen.

The resulting screen shows 2 Errors and 2 Warnings (highlighted in Red):
[cid:image002.jpg@01CC47DC.07E66A60]

But when the same content is validated on the W3C website as Direct Input,  1 Error and 4 Warnings are shown (highlighted in brown):
[cid:image006.jpg@01CC47DC.07E66A60]

Rest all the filter criteria remains the same viz. Encoding: UTF-8 and DocType: HTML 4.0.1 Transitional

Please let me know if this is an expected behaviour or a bug. Also please let me know what workaround should be followed to eradicate this issue.

Thanks & Regards,
Chandan Kumar Parmar
Avanade Technology Group
Accenture | Delivery Centres for Technology in India
AIM: aaryan20032003
Mobile: +91 97300 123 25
www.accenture.com<http://www.accenture.com/> | www.avanade.com<http://www.avanade.com/>

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