var up;
var count, inc;

function counter(start, increment) 
{
	count = start;
	inc = increment;
	up_repeat(); 
}

function up_repeat() 
{
	count += inc;
	$('doc_num').innerHTML = new NumberFormat(Math.round(count)).toFormatted();
	up = setTimeout("up_repeat()", 1000); 
}