var portfolioWindow = null
function openPortfolioWindow()
{
  // Check to make sure the window does not already exist
  if (!portfolioWindow || portfolioWindow.closed) 
  {
    portfolioWindow = window.open('','MiniWindow','toolbar=no,location=no,directories=no,copyhistory=0,scrollbars=yes,resizable=yes,height=200,width=300')
    portfolioWindow.focus()
  }
  else 
  {
    portfolioWindow.focus()
  }
  
}