tt_szigeteles_on   = new Image(139,90); tt_szigeteles_on.src    = "images/tt_szigeteles_on.jpg";
tt_szigeteles_off = new Image(139,90); tt_szigeteles_off.src  = "images/tt_szigeteles_off.jpg";

tt_falbancso_on   = new Image(139,90); tt_falbancso_on.src    = "images/tt_falbancso_on.jpg";
tt_falbancso_off = new Image(139,90); tt_falbancso_off.src  = "images/tt_falbancso_off.jpg";

tt_ipari_on   = new Image(139,90); tt_ipari_on.src    = "images/tt_ipari_on.jpg";
tt_ipari_off = new Image(139,90); tt_ipari_off.src  = "images/tt_ipari_off.jpg";

tt_egyeb_on   = new Image(139,90); tt_egyeb_on.src    = "images/tt_egyeb_on.jpg";
tt_egyeb_off = new Image(139,90); tt_egyeb_off.src  = "images/tt_egyeb_off.jpg";


function deact (imagename)      
{ 
if (document.images)
document[imagename].src = eval(imagename + "_off.src"); 
}
function act (imagename)
{
if (document.images)         
document[imagename].src = eval(imagename + "_on.src");  
}