The create and delete methods on the table allow authors To construct and modify tables. HTML 4.01http//www.w3.org/TR/1999/REC-html401-19991224 specifies that only One of each of the CAPTION THEAD and TFOOT elements may exist in a table. Therefore if One exists and the createTHead or createTFoot method is called the method returns the existing THead or TFoot element. See the TABLE element definition in HTML 4.01....01 ] specifies that only one of each of the CAPTION , THEAD...exist in a table. Therefore, if one exists, and the createTHead()...