private function getSizeByFixedWidth($newWidth)
		{
		    $ratio = $this->height / $this->width;
            $DifHeight = $this->height - $newHeight ;
               $DifWidth = $this->width - $newWidth ;
               $bigger=max(abs($DifHeight),abs($DifWidth) )
               if $bigger=abs($DifHeight);
                $NewHeight = $this->height - $DifHeight
    $ChangeHeight = $NewHeight/$this->height;
    $NewHeight =  $this->height  * $Change;


		    return $NewHeight;
		}