javascript-C# communication

Question

Fixed Header for the GridView when ever page loads and grid loads in the  page.

 

I wrote a javascript function to create the table with heading of the grid.

 so totally two divs one contains grid(I will hide the header) which is scrollable and another for the table Heading.

 

The javascript  I wrote cant be called in the page when required.

 

Is there any possible solution or way for this.