Required library edition:
Required library file: dhtmlxgrid.js

set header label and default params for new headers

• hdrStr - header string with delimiters
• splitSign - string used as a split marker, optional. Default is ”#cspan”
• styles - array of header styles

   //setting columns labels
   mygrid.setHeader("A,B,C");
   //setting columns labels and it's styles
   mygrid.setHeader("A,B,C",null,["text-align:right;","text-align:left;","text-align:center"]);

See also: setNoHeader, attachHeader, setColumnLabel