if (document.images) {
servizioff=new Image();
servizioff.src= "images/menu/servizioff.gif";
servizion=new Image();
servizion.src= "images/menu/servizion.gif";
interventooff=new Image();
interventooff.src= "images/menu/interventooff.gif";
interventoon=new Image();
interventoon.src= "images/menu/interventoon.gif";
teamoff=new Image();
teamoff.src= "images/menu/teamoff.gif";
teamon=new Image();
teamon.src= "images/menu/teamon.gif";
portfoliooff=new Image();
portfoliooff.src= "images/menu/portfoliooff.gif";
portfolioon=new Image();
portfolioon.src= "images/menu/portfolioon.gif";
sedioff=new Image();
sedioff.src= "images/menu/sedioff.gif";
sedion=new Image();
sedion.src= "images/menu/sedion.gif";
partnershipoff=new Image();
partnershipoff.src= "images/menu/partnershipoff.gif";
partnershipon=new Image();
partnershipon.src= "images/menu/partnershipon.gif";
candidatioff=new Image();
candidatioff.src= "images/menu/candidatioff.gif";
candidation=new Image();
candidation.src= "images/menu/candidation.gif";
aziendeoff=new Image();
aziendeoff.src= "images/menu/aziendeoff.gif";
aziendeon=new Image();
aziendeon.src= "images/menu/aziendeon.gif";
contattioff=new Image();
contattioff.src= "images/menu/contattioff.gif";
contattion=new Image();
contattion.src= "images/menu/contattion.gif";
companyoff=new Image();
companyoff.src= "images/menu/companyoff.gif";
companyon=new Image();
companyon.src= "images/menu/companyon.gif";


}

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