Validation error <hr color="red" width="1200" size="1">

|I keep getting an error message although the code is correct.
What is wrong with this code?
Matthew
Web developer for Asisbiz.com and others

<hr color=*"*red" width="1200" size="1">|

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. This error is often caused by incorrect use of the "Strict" 
document type with a document that uses frames (e.g. you must use the 
"Transitional" document type to get the "target" attribute), or by using 
vendor proprietary extensions such as "marginheight" (this is usually 
fixed by using CSS to achieve the desired effect instead).

This error may also result if the element itself is not supported in the 
document type you are using, as an undefined element will have no 
supported attributes; in this case, see the element-undefined error 
message for further information.

How to fix: check the spelling and case of the element and attribute, 
(Remember XHTML is all lower-case) and/or check that they are both 
allowed in the chosen document type, and/or use CSS instead of this 
attribute. If you received this error when using the <embed> element to 
incorporate flash media in a Web page, see the FAQ item on valid flash 
<http://validator.w3.org/docs/help.html#faq-flash>.