function getNewTip(numTips)
{
  tipNum = Math.floor(Math.random() * numTips);
  while (tipNum == glbTempTipNum)
  {
    tipNum = Math.floor(Math.random() * numTips);
  }
  glbTempTipNum = tipNum;
  var tip = eval('tip_' + tipNum);
  changeInnerHTML('div_tips',tip);
}