header going haywire

[jakigood]

can someone tell me why my header is off center? it was fine initially but has gone to the left for the past two days.:dunno
www.jakigoodphotography.com
(http://www.jakigoodphotography.com)

[Allen]

can someone tell me why my header is off center? it was fine initially but has gone to the left for the past two days.:dunno
www.jakigoodphotography.com
(http://www.jakigoodphotography.com)
It centers when the actually photo size is used. Might add a
margin-bottom to add space between navbar if you like.

#my_banner {
width: 600px;
height: 120px;
margin: 0 auto;
margin-bottom: 10px;
background: url(http://jakigood.smugmug.com/photos/165562647-O-0.jpg) no-repeat;
}