Required library edition:
Required library file: dhtmlxgrid.js

sets position and visibility of sort arrow

• state - true/false - show/hide image
• ind - index of column
• order - asc/desc - type of image (optional, “asc” by default)
• row - one based index of header row (used in multirow headers, top row by default)

   //minimal parameters set
   mygrid.setSortImgState(true,1)
   //maximal parameters set
   mygrid.setSortImgState(true,1,"des",2)
   //hide sorting image
   mygrid.setSortImgState(false)

See also: sortRows