IE extra white line between picture & bar

1) Script Title: DD: Solid Block Menu

2) Script URL (on DD): www.seasunset.nl

3) Describe problem: 2 Problems.

1. Width of uploaded picture differs from width menu bar (problably rounding problem) by 1px/2px. Solved this by changing "width:100%;" by

.solidblockmenu {
position: relative;
width: 718px; /* width picture 720px */
left: 1px;
..
..
}

Maybe there is a better way to resolve this.

2. IE shows a blanc line/block between menubar and picture when menu bar is positioned directly underneath the picture. Mozilla browser (SeaMonkey) doestn't have the problem.

I really need some help to resolve this. Spending nights on this phenomenom already.

By the way - I like the scripts. It is an enormous help to learn and uderstand CSS. Fantastic.