XX=window.open　没有返回值（ＸＸ＝＝ＮＵＬＬ）　两天了　在线等待　70分呀

把（改为( 成功
string tt = " var XX; XX=window.open('" + Request.ApplicationPath + "/index.aspx'" + ",'','toolbar=no,menubar=no,titlebar=yes,directories=no,resizable=yes,status=yes,fullscreen=no,top=0;left=0,width=500,height=400');";
        Response.Write("<script language=javascript>");
        Response.Write(tt);
        tt.Remove(0, tt.Length);
        tt = "if (XX != null) {alert(XX);XX.moveTo(0,0);XX.resizeTo(screen.availWidth,screen.availHeight);window.opener=null;window.close();}else alert('警告信息'); ";
        Response.Write(tt);
        Response.Write("</script>");