function convertSize(b)
{
	var mb = b*0.0000009536743164062;
	var kb = b*0.0009765625;
	if (b >=1048576)
		{
		var num = (Math.round(mb*10)/10 + ' Mb');
		}
		else
		{
		var num = (Math.round(kb) + ' Kb');
		}
		return document.write(num);
}