// these are the nav images
 
 if (document.images)
 

	{
	nav_about_overOn= new Image(56,12);
	nav_about_overOn.src="http://www.glasspockets.org/images/nav_about_over.gif";
	nav_about_overOff= new Image(56,12);
	nav_about_overOff.src="http://www.glasspockets.org/images/nav_about.gif";
	}
	{
	nav_facts_overOn= new Image(56,12);
	nav_facts_overOn.src="http://www.glasspockets.org/images/nav_facts_over.gif";
	nav_facts_overOff= new Image(56,12);
	nav_facts_overOff.src="http://www.glasspockets.org/images/nav_facts.gif";
	}
		{
	nav_work_overOn= new Image(56,12);
	nav_work_overOn.src="http://www.glasspockets.org/images/nav_work_over.gif";
	nav_work_overOff= new Image(56,12);
	nav_work_overOff.src="http://www.glasspockets.org/images/nav_work.gif";
	}
		{
	nav_inside_overOn= new Image(56,12);
	nav_inside_overOn.src="http://www.glasspockets.org/images/nav_inside_over.gif";
	nav_inside_overOff= new Image(56,12);
	nav_inside_overOff.src="http://www.glasspockets.org/images/nav_inside.gif";
	}
		
	
 
//this is the function  
 
function turnon(imgName)
 {
   if (document.images)
    {
      imgOn=eval(imgName + "On.src");
      document[imgName].src= imgOn;
    }
 }
 
function turnoff(imgName)
 {
   if (document.images)
    {
      imgOff=eval(imgName + "Off.src");
      document[imgName].src= imgOff;
    }
 }