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function number_format (number, decimals, dec_point, thousands_sep) {
          // Strip all characters but numerical ones.
          number = (number + '').replace(/[^0-9+\-Ee.]/g, '');
          var n = !isFinite(+number) ? 0 : +number,
            prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),
            sep = (typeof thousands_sep === 'undefined') ? ' ' : thousands_sep,
            dec = (typeof dec_point === 'undefined') ? '.' : dec_point,
            s = '',
            toFixedFix = function (n, prec) {
              var k = Math.pow(10, prec);
              return '' + Math.round(n * k) / k;
            };
          // Fix for IE parseFloat(0.55).toFixed(0) = 0;
          s = (prec ? toFixedFix(n, prec) : '' + Math.round(n)).split('.');
          if (s[0].length > 3) {
            s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep);
          }
          if ((s[1] || '').length < prec) {
            s[1] = s[1] || '';
            s[1] += new Array(prec - s[1].length + 1).join('0');
          }
          return s.join(dec);
        }
        
        
        number_format(25000)