Change the table background in the master page from the content page

[GregoryHouseMD]

So I have a menu on the master page that is in a table, and I want to change the background of the cell that the clicked link is in depending on the page the user is on.

I tried adding this function on the master page

public void HomePage()
        {
            HOMEPAGE.Style.Add(HtmlTextWriterStyle.BackgroundColor, "Red");       
        }

and then simply calling this function in the Page_Load of the content page but it didn't work.

Should I call this function in a different method like Init or PreInit, or am I using a wrong approach altogether?

[crishlay]

write code behind the master page and find which menu was selected...depending upon selection change background of table..also write table id for find this table id in codebehind