// Nav1 Function
	window.Nav1 = function(btn,state)
	{
	if(state == 'over')
	{
	switch(btn)
	{
	case 1:
	$("#btn1img").attr('src','images/button1dwn.gif');
	break;
	case 2:
	$("#btn2img").attr('src','images/button2dwn.gif');
	break;
	case 3:
	$("#btn3img").attr('src','images/button3dwn.gif');
	break;
	case 4:
	$("#btn4img").attr('src','images/button4dwn.gif');
	break;
	}
	}
	else
	{
	switch(btn)
	{
	case 1:
	$("#btn1img").attr('src','images/button1up.gif');
	break;
	case 2:
	$("#btn2img").attr('src','images/button2up.gif');
	break;
	case 3:
	$("#btn3img").attr('src','images/button3up.gif');
	break;
	case 4:
	$("#btn4img").attr('src','images/button4up.gif');
	break;
	}
	}
	}
// END Nav1 Function