//load rollover images
abson = new Image;
abson.src ="/lrec/conference/images/abs_a.gif"; 
authorson =new Image;
authorson.src="/lrec/conference/images/authors_a.gif"; 
keywordson =new Image;
keywordson.src="/lrec/conference/images/keywords_a.gif"; 
paperson =new Image;
paperson.src ="/lrec/conference/images/papers_a.gif"; 
programon=new Image;
programon.src="/lrec/conference/images/program_a.gif";
searchon=new Image;
searchon.src="/lrec/conference/images/search_a.gif";
sessionson=new Image;
sessionson.src="/lrec/conference/images/sessions_a.gif";
absoff =new Image;
absoff.src ="/lrec/conference/images/abs.gif"; 

authorsoff =new Image;
authorsoff.src="/lrec/conference/images/authors.gif"; 
keywordsoff =new Image;
keywordsoff.src="/lrec/conference/images/keywords.gif"; 
papersoff =new Image;
papersoff.src ="/lrec/conference/images/papers.gif"; 
programoff=new Image;
programoff.src="/lrec/conference/images/program.gif";

searchoff=new Image;
searchoff.src="/lrec/conference/images/search.gif";
sessionsoff=new Image;
sessionsoff.src="/lrec/conference/images/sessions.gif";

function imgOn(imgName) 
{ if (document.images) 
 {
        document[imgName].src = eval(imgName + "on.src"); 
   }
 }
function imgOut(imgName) 
{ if (document.images) 
   {
         document[imgName].src = eval(imgName + "off.src");
    }
 }