talklayer.Visible=true; //is the text area  supposed to be visible?

function hideInfo() // hides both the weather info and RSS info layers
{
Weather_Info.Visible = false;
RSSText1.Visible = false;
}

function exchanger()   // called at widget load
{

while (talklayer.Visible==true)   //is the text area visible to the user
{
hideInfo();                                              // empty the text area
RSSText1.Visible = true;                        //show me the RSS feed text
sleep(1500);                                         //leave it up for a while
hideInfo();                                            // hide  all text
Weather_Info.Visible = true;                //Show me the Weather text now
hideInfo();                                          //hide all the text
sleep(1500);                                      //wait, repeat on loop
 }

}

My problem is using this code both layers show up simultaneously and they won't turn off. Am I doing something wrong? Is there a better way to rotate between text layers?

function timercore1OnUpdate(Sender)
{
  if(talklayer.Visible)
  {
    Weather_Info.Visible = !Weather_Info.Visible;
    RSSText1.Visible = !RSSText1.Visible;
  }
}