1.Do we need to add any .js files for having interaction with other grid . please Suggest me on this issue.
2.Radio button On clicking twice or thrice its getting selected . where might be the mistake.
.Do we need to add any .js files
If you mean drag-n-drop, you need to have dhtmlxgrid_drag.js included to enable it. ( just enable d-n-d in both components, there is no any additional steps necessary to allow d-n-d between different grids )
>>Radio button On
If you clicking on not-checked radio - it switched to selected state without row selection
If you clicking on checked radio button - row will be selected