if (document.images) {
homeoff=new Image();
homeoff.src= "images/menus/homeoff.gif";
homeon=new Image();
homeon.src= "images/menus/homeon.gif";
companyoff=new Image();
companyoff.src= "images/menus/companyoff.gif";
companyon=new Image();
companyon.src= "images/menus/companyon.gif";
productsoff=new Image();
productsoff.src= "images/menus/productsoff.gif";
productson=new Image();
productson.src= "images/menus/productson.gif";
qualityoff=new Image();
qualityoff.src= "images/menus/qualityoff.gif";
qualityon=new Image();
qualityon.src= "images/menus/qualityon.gif";
contractoff=new Image();
contractoff.src= "images/menus/contractoff.gif";
contracton=new Image();
contracton.src= "images/menus/contracton.gif";
newsoff=new Image();
newsoff.src= "images/menus/newsoff.gif";
newson=new Image();
newson.src= "images/menus/newson.gif";
contactoff=new Image();
contactoff.src= "images/menus/contactoff.gif";
contacton=new Image();
contacton.src= "images/menus/contacton.gif";

boardoff=new Image();
boardoff.src= "images/menus/boardoff.gif";
boardon=new Image();
boardon.src= "images/menus/boardon.gif";
careeroff=new Image();
careeroff.src= "images/menus/careeroff.gif";
careeron=new Image();
careeron.src= "images/menus/careeron.gif";
cohistoryoff=new Image();
cohistoryoff.src= "images/menus/cohistoryoff.gif";
cohistoryon=new Image();
cohistoryon.src= "images/menus/cohistoryon.gif";
coprofileoff=new Image();
coprofileoff.src= "images/menus/coprofileoff.gif";
coprofileon=new Image();
coprofileon.src= "images/menus/coprofileon.gif";
ourteamoff=new Image();
ourteamoff.src= "images/menus/ourteamoff.gif";
ourteamon=new Image();
ourteamon.src= "images/menus/ourteamon.gif";

}

function imageOn (imagename){
  document[imagename].src=eval(imagename+"on.src");
 }
function imageOff (imagename){
  document[imagename].src=eval(imagename+"off.src");
 }