Remove attribute doesnt work

[Ismail]

Guys,

I have the following code in page_load event of user control

Go.Attributes.Add("onclick","if(" + search.ClientID +
".value==''){alert('" + noSearchText + "');return false;}");

Go.Attributes.Remove("border");

the add works fine however the remove does not. I have tried moving the
remove code to prerender and init methods it still wont go. The Go is

protected System.Web.UI.WebControls.ImageButton Go;

Anyone any ideas?

Regards

Ismail