Displaying message in web page

Hi,

  I am using master and child page. In child page, i am using update panel and controls inside the update panel relating to the page. When a record is inserted or edited, i want a message to be displayed at the top of the page. The message should stay for few seconds and then be invisible. When the page is scrolled, the message should always reside at the top of the content page. Please help me on this.