// JavaScript Document
function ChangePic(btn)
{
	var counter = document.getElementById('counter').value;
	
	if(btn == 'fwd' && counter < 6)
		counter++;
	else if(btn == 'back' && counter > 0)
		counter--;
		
	document.getElementById('counter').value = counter;
	
	var pix=new Array();
	pix[0]="images/1.jpg";
	pix[1]="images/2.jpg";
	pix[2]="images/3.jpg";
	pix[3]="images/4.jpg";
	pix[4]="images/5.jpg";
	pix[5]="images/6.jpg";
	pix[6]="images/7.jpg";
	
	document.getElementById('myImg').src = pix[counter];
	
}