hilight=new MakeArray(10);
	lowlight=new MakeArray(10);
	
	for (var i=1; i<=10; i++)
	{
		hilight[i].src="../scripts/nav/" + String(i) + "_on.gif";
		lowlight[i].src="../scripts/nav/" + String(i) + "_off.gif";
	}

	function MakeArray(n)
		  {
			this.length = n	
			for (var i = 1; i<=n; i++)
				{
				  this[i] = new Image()
			  }
			  return this
			 }
	function LightOn(name,num)
		{
		  document.images[name].src=hilight[num].src;
		}
	
	function LightOff(name,num)
		{
		  document.images[name].src=lowlight[num].src;
		}