First website; minor drop-down nav bar issues and through site check required

Hi I have spent countless hours learning to use Deamweaver and understanding the basics of webdesign. This is my first website and it is probably 98% there... I have had it live for about a couple weeks now but I just need a little help to have it run perfectly.

I am aware of issues with my horizontal 3 tier drop down menu. On some browsers, the last tab (Resources) bumps down to a second line. I have also noticed (on most if not all browsers) when you zoom in or out it the nav bar jumps between one and two lines. Is this a simple fix?

I also noticed that the nav bar was ultra sensitive (you had to be precisely over the text in the second level of the bar and then had to go quickly to the 3rd tier otherwise the 3rd tier options would disappear before you got there). This difficulty occurred on an older version of IE. I haven't changed anything that should have solved that problem, yet it doesn't seem to do it anymore... Not sure if the problem is preeminently fixed or still happening on some computers.

Other than these two small glitches, I am not aware of any other problems however I would REALLY APPRECIATE someone more experienced taking a look at the site and seeing if they can find any other compatibility issues or suggestions on how to improve the site.

Thank you very much for your help.

www.distinctbuild.ca

Jeff