Not sure exactly what I have done but it suddenly started to work!
an explanation of how the files hang together though would be really useful - as I am not sure I did it properly.
I added the following code to my stylesheet:
/* added for tabs */
div#menu{float:left;width: 100%;background: #BBD9EE}
ul#nav,ul#nav li{list-style-type:none;margin:0;padding:0}
ul#nav{margin-left: 95px;width:650px; margin-top:20px}
ul#nav li{float:left;margin-right: 3px;text-align: center}
ul#nav a{float:left;width: 12em;padding: 9px 0;background: #E7F1F8;text-decoration:none;color: #666}
ul#nav a:hover{background: #FFA826;color: #FFF}
ul#nav li.activelink a,ul#nav li.activelink a:hover{background: #FFF;color: #003}
/*Nifty Corners Cube CSS by Alessandro Fulciniti
The following classes are added dinamically by javascript,
and their use should be avoided in the markup */
b.niftycorners,b.niftyfill{display:block}
b.niftycorners *{display:block;height: 1px;line-height:1px;font-size: 1px;
overflow:hidden;border-style:solid;border-width: 0 1px}
/normal/
b.r1{margin: 0 3px;border-width: 0 2px}
b.r2{margin: 0 2px}
b.r3{margin: 0 1px}
b.r4{height: 2px}
b.rb1{margin: 0 8px;border-width:0 2px}
b.rb2{margin: 0 6px;border-width:0 2px}
b.rb3{margin: 0 5px}
b.rb4{margin: 0 4px}
b.rb5{margin: 0 3px}
b.rb6{margin: 0 2px}
b.rb7{margin: 0 1px;height:2px}
b.rb8{margin: 0;height:2px}
b.rs1{margin: 0 1px}
/transparent inside/
b.t1{border-width: 0 5px}
b.t2{border-width: 0 3px}
b.t3{border-width: 0 2px}
b.t4{height: 2px}
b.tb1{border-width: 0 10px}
b.tb2{border-width: 0 8px}
b.tb3{border-width: 0 6px}
b.tb4{border-width: 0 5px}
b.tb5{border-width: 0 4px}
b.tb6{border-width: 0 3px}
b.tb7{border-width: 0 2px;height:2px}
b.tb8{border-width: 0 1px;height:2px}
b.ts1{border-width: 0 2px}
(I have a feeling these should be two different files??)
I then created a jscript directory and put into it niftycube.js, but called is jscript_niftycube.js and I created a file called jscript_sw.js which only has
NiftyLoad=function(){
Nifty("ul#nav a","small transparent top");
}
The problem is I don't know WHY or HOW it works so its difficult for me to amend. At one point the top banner with the shopping cart icon and all my fonts went huge and I have no idea why.
Any pointers gratefully received. Especially if you could point me in the direction of where I would change the tab and rollover colours and the font on the tabs?
Christine