i checked it in cse html validator lite and found these:
error, line 5: The "script" tag was found, but it is not valid due to where it is used. This element may be contained in "body" and "head". This element may not be contained in "frameset". The tag is currently not contained in an element that allows its use.
warning, line 12: Found the character '>' with no previous character '<' to open the tag. The character '<' must appear before each '>' to open a tag. If you actually want to use this character in the text portion of your document, then you should use the character entity ">". Note, however, that using this entity is not technically necessary according to the HTML specification (but it is highly recommended that you use it).
error, line 15: The "style" tag was found, but it is not valid due to where it is used. This element may be contained in "head". The tag is currently not contained in an element that allows its use.
error, line 31: The "center" tag must be closed but the closing tag was not found.
error, line 34: The "center" tag must be closed but the closing tag was not found.
error, line 38: The "font" tag must be closed but the closing tag was not found.
error, line 38: The hexadecimal color value for the "color" attribute is missing the '#' character.
error, line 38: The "link" attribute is not valid for the "font" element. The valid attributes for this element are: "class", "color", "contenteditable", "dir", "face", "font-weight", "hidefocus", "id", "lang", "language", "onbeforecopy", "onbeforecut", "onbeforepaste", "onclick", "oncontextmenu", "oncopy", "oncut", "ondblclick", "ondragstart", "onfilterchange", "onhelp", "onkeydown", "onkeypress", "onkeyup", "onmousedown", "onmouseenter", "onmouseleave", "onmousemove", "onmouseout", "onmouseover", "onmouseup", "onmousewheel", "onpaste", "onselectstart", "point-size", "size", "style", "title", "unselectable", "xml:lang", and "xml:space".
error, line 38: The "vlink" attribute is not valid for the "font" element. The valid attributes for this element are: "class", "color", "contenteditable", "dir", "face", "font-weight", "hidefocus", "id", "lang", "language", "onbeforecopy", "onbeforecut", "onbeforepaste", "onclick", "oncontextmenu", "oncopy", "oncut", "ondblclick", "ondragstart", "onfilterchange", "onhelp", "onkeydown", "onkeypress", "onkeyup", "onmousedown", "onmouseenter", "onmouseleave", "onmousemove", "onmouseout", "onmouseover", "onmouseup", "onmousewheel", "onpaste", "onselectstart", "point-size", "size", "style", "title", "unselectable", "xml:lang", and "xml:space".
error, line 49: The attribute value "40%" for the "width" attribute was not enclosed in single or double quotation marks when it must be. In HTML 4.01, attribute values containing characters other than A-Z, a-z, 0-9, hyphens, periods, underscores, and colons must be quoted. In XHTML/XML, all attribute values must be quoted. Quotes are recommended even if they are not required.
error, line 50: The "font" tag must be closed but the closing tag was not found.
error, line 50: The "font" tag (opened in line 50) should be closed before the "td" tag is closed (nesting error).
error, line 52: The "center" tag (opened in line 52) should be closed before the "td" tag is closed (nesting error).
error, line 53: The "font" tag (opened in line 53) should be closed before the "td" tag is closed (nesting error).
error, line 59: The attribute value "65%" for the "width" attribute was not enclosed in single or double quotation marks when it must be. In HTML 4.01, attribute values containing characters other than A-Z, a-z, 0-9, hyphens, periods, underscores, and colons must be quoted. In XHTML/XML, all attribute values must be quoted. Quotes are recommended even if they are not required.
error, line 63: The attribute value "65%" for the "width" attribute was not enclosed in single or double quotation marks when it must be. In HTML 4.01, attribute values containing characters other than A-Z, a-z, 0-9, hyphens, periods, underscores, and colons must be quoted. In XHTML/XML, all attribute values must be quoted. Quotes are recommended even if they are not required.
error, line 67: The attribute value "65%" for the "width" attribute was not enclosed in single or double quotation marks when it must be. In HTML 4.01, attribute values containing characters other than A-Z, a-z, 0-9, hyphens, periods, underscores, and colons must be quoted. In XHTML/XML, all attribute values must be quoted. Quotes are recommended even if they are not required.
error, line 74: This line contains part of a quoted string that spans more than one line (not recommended) or a quoted string (like an attribute value) that is missing the beginning or closing quotation mark. You should check this line for improperly quoted attribute values that may be missing an opening or closing quotation mark. As currently configured, HTML Validator requires that all quoted strings be contained on one line and have beginning and end quotes. Note that because of inconsistent handling by user agents, it is not recommended that attribute values contain line breaks.
error, line 82: The "size" attribute has an invalid attribute value "5.5". Try using one of the following values: an integer offset from -6 to +6 or an integer from 1 to 7.
error, line 88: The "size" attribute has an invalid attribute value "4.5". Try using one of the following values: an integer offset from -6 to +6 or an integer from 1 to 7.
error, line 98: The "font" tag (opened in line 93) should be closed before the "td" tag is closed (nesting error).
Having copied and pasted those one by one, i'll tell you that your site looks fine in mozilla. If you want, you can get cse html validator lite for free from http://htmlvalidator.com/ and click on the download link.