Code snippet adding javascript that maximizes dialog window

if (SPContext.Current.IsPopUI)

{

   if (!Page.ClientScript.IsClientScriptBlockRegistered(GetType(), "ScriptWinMax"))

   {

      string script = @"function _maximizeWindow() {

         var currentDialog = SP.UI.ModalDialog.get_childDialog();

         if (currentDialog != null && !currentDialog.$S_0)

            currentDialog.$z();

         }       

         ExecuteOrDelayUntilScriptLoaded(_maximizeWindow, 'sp.ui.dialog.js');";

      Page.ClientScript.RegisterClientScriptBlock(GetType(), "ScriptWinMax", script, true);

   }

}