HTML Checking for Large Sites
Rocket Validator integrates the W3C Validator HTML checker into an automated web crawler.
Bad value “X1,Y1,X2,Y2” for attribute “coords” on element “area”: A circle must have three comma-separated integers. The first integer must be less than the third. A polyline must have at least six comma-separated integers.
The coordinates specified for an
<area> element using the
coords attribute are not in a valid format.
For a rectangle (
shape="rect"), the format
X1,Y1,X2,Y2is expected, where the top-left corner is specified by
X1, Y1and the bottom-right corner is specified by
X2, Y2, therefore
X1must be lower than
Y1must be lower than
Y2because the coordinates
0, 0start at the top-left.
For a polygon (
shape="poly"), the format
X1,Y1,X2,Y2,...,Xn,Ynis expected to contain a list of coordinate pairs (at least 3, for a triangle).
For a circle (
shape="circle"), the format
X,Y,Ris expected where
X, Yrepresents the coordinates of the center of the circle (from the top-left corner), and
Ris the radius.
Related W3C validator issues
Links created with the <a> element no longer accept a shape attribute. In order to define image maps, use the <area> element instead.
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