var crt=1;
function next(num)
{
	if (this.crt <= num)
	{
	this.crt++;
	document.getElementById('pix1').src='pix/tmp/'+(this.crt)+'m.jpg';
	document.getElementById('a1').href='pix/'+(this.crt)+'.jpg';
	document.getElementById('pix2').src='pix/tmp/'+(this.crt+1)+'m.jpg';
	document.getElementById('a2').href='pix/'+(this.crt+1)+'.jpg';
	document.getElementById('pix3').src='pix/tmp/'+(this.crt+2)+'m.jpg';
	document.getElementById('a3').href='pix/'+(this.crt+2)+'.jpg';	
	}
}

function back()
{
	if (this.crt > 1)
	{
	this.crt--;
	document.getElementById('pix1').src='pix/tmp/'+(this.crt)+'m.jpg';
	document.getElementById('a1').href='pix/'+(this.crt)+'.jpg';
	document.getElementById('pix2').src='pix/tmp/'+(this.crt+1)+'m.jpg';
	document.getElementById('a2').href='pix/'+(this.crt+1)+'.jpg';
	document.getElementById('pix3').src='pix/tmp/'+(this.crt+2)+'m.jpg';
	document.getElementById('a3').href='pix/'+(this.crt+2)+'.jpg';		
	}
}