how to make control visible in codebehind which is invisible in javascript

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ASP.NET

Hi , I have a div
as

<div id="divPagOfPage"  runat="server"></div>

i have made it invisible in clientside as

document.getElementById("divPagOfPage").style.display = "none";

Now i want again this div to be visible ,for this i have wrote code in codebehind
as

divPagOfPage.Style.Add("display", "inline");
  divPagOfPage.Visible = true;

and also

  ScriptManager.RegisterStartupScript(this, this.GetType(), "starScript", "ShowdivPagOfPage();", true);
function ShowdivPagOfPage(){
document.getElementById("divPagOfPage").style.display = "inline";

}

I tried all the three above code but still the div is invisible.How to make it visible in codebehind which is made invisible in cleintside.