Javascript Popup window causes parent font size increase?

If you are usnig Javascript popup window and its disturbing your parent font sizes use the ScriptManager.RegisterStartupScript instead.

ScriptManager.RegisterStartupScript(Page, Page.GetType(), "newWindow", "window.open('MyPage.aspx?ID=" + MyID + "','_blank','status=1,toolbar=0,menubar=0,location=1,scrollbars=1,resizable=1,width=30,height=30');", true);