Navigation Block HTML validation

Don't know if it's worth reporting... http://validator.w3.org/ reports the following errors (I have Domain Navigation block in home page left sidebar, Garland).

document type does not allow element "select" here; missing one of "p", "h1", "h2", "h3", "h4", "h5", "h6", "div", "pre", "address", "fieldset", "ins", "del" start-tag
…this.value) location.href=this.value;"><option value="http://domain.foo.com/">…
The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "p" or "table") inside an inline element (such as "a", "span", or "font").

the name and VI delimiter can be omitted from an attribute specification only if SHORTTAG YES is specified
…alue="http://domain.foo.com/" selected>domain</option><option value="http://…
"VI delimiter" is a technical term for the equal sign. This error message means that the name of an attribute and the equal sign cannot be omitted when specifying an attribute. A common cause for this error message is the use of "Attribute Minimization" in document types where it is not allowed, in XHTML for instance.
How to fix: For attributes such as compact, checked or selected, do not write e.g <option selected ... but rather <option selected="selected" ...