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);
		}