// JavaScript Document
//Left Menu Navigation Script
function expandLeftNav(menuName) {   
  var sup = menuName; 
  if (sup != '')
  {
  var sub = document.getElementById(sup + 'Sub')
    if (sub != null)
    {
      if (sub.style.display == 'none')
      {	  
	  	sub.style.display = '';		
		document.getElementById('arrow' + sup).src='../../../images_TrekByBike/LayoutGraphics/open.gif';       
      }
      else  
      {
        sub.style.display = 'none';		
	    document.getElementById('arrow' + sup).src='../../../images_TrekByBike/LayoutGraphics/closed.gif';  
      }
    }
  }
}