num=1

function next()
{
	num=num+1;
	if(num>15)
	{num=1;}
	url="grfx/"+num+".jpg";
	document.pic.src=url;
}

function back()
{
	num=num-1;
	if(num<1)
	{num=15;}

	url="grfx/"+num+".jpg";
	document.pic.src=url;
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}