How to stop relative position moving other items on webpage

[heldenbrau]

I am trying to make a popup menu on my website:

 

http://www.diamondcz.co.uk/index.shtml

 

I want it to pop up in the position where is is popping up now, but without shifting the other links in the menu down.  here is the css:

 

.menuitems{

  position:relative;

  top:-10;

  right:-100;

  width:150px;

  text-align:left;

  color:darkblue;

  text-decoration:none;

  padding-left:5px;

  padding-right:5px;

  padding-top:2px;

  padding-bottom:2px;

  display:none;

}

 

 

[heldenbrau]

Just realised it doesn't even work in IE, you can only see it in firefox.