code: function updateGrabberSizes() {
  			if (ctrl.horizontal !== undefined) {
  				var bgSizeElt = ctrl.ngelt.css('background-size');
  				var bgSizeSb = ctrl.ngsb.css('background-size');
  
  				var grabbersizePixel = '100%';
  				if(getInnerLimit() !== $scope.total) {
  					grabbersizePixel = getGrabberSizePixelFromPercent(getGrabberSizePercentFromScopeValues())+'px';
  				}
  
  				if (ctrl.horizontal) {
  					bgSizeElt = bgSizeElt.replace(/.*\s+/, grabbersizePixel + ' ');
  					bgSizeSb = bgSizeSb.replace(/.*\s+/, grabbersizePixel + ' ');
  				} else {
  					bgSizeElt = bgSizeElt.replace(/px\s+\d+(\.\d+)*.*/, 'px ' + grabbersizePixel);
  					bgSizeSb = bgSizeSb.replace(/px\s+\d+(\.\d+)*.*/, 'px ' + grabbersizePixel);
  				}
  				ctrl.ngelt.css({'background-size': bgSizeElt});
  				ctrl.ngsb.css({'background-size': bgSizeSb});
  			}
  		}
docs: Calcul la taille des grabbers