int isChildOf(string elem1[, string elem2...])

•Returns 1 if the parent of the current element is elem1, 2 if the parent is elem2, etc.

•Returns 0 if the parent of the current element is not one of the arguments.

•Performs case-insensitive compares.

•Use only in tag name start, tag name end, attribute, and attribute value programs.

•This function is supported only in CSE HTML Validator v11.00 and later.