header advert widget throwing out nav bar layout
I have sucessfully posted a banner ad in the header of my site
www.greenhoutbay.org but it throws out the navigation bar. If I remove the ad from the header widget, the Nav bar is fine. (it ads a blank page wide horizontal box in IE and throws out my home page button in Firefox and Chrome)
This is the code I used in the widget to place the ad - which does place the ad correctly
<a target="_blank" href="http://www.houtbaygreenfaire.org">
<img src="http://greenhoutbay.org/
wp-content/uploads/2012/06/greenfaire2.png" width="468" height="70">
Would appreciate any help to correct this as I can't go live without this being sorted out. Not sure what I am doing wrong