if (document.images) {
hom_on = new Image();	hom_on.src = def_path+"images/roll/shome_on.gif";
hom_off = new Image();	hom_off.src = def_path+"images/roll/shome_off.gif";
bio_on = new Image();	bio_on.src = def_path+"images/roll/sbio_on.gif";
bio_off = new Image();	bio_off.src = def_path+"images/roll/sbio_off.gif";
mus_on = new Image();	mus_on.src = def_path+"images/roll/smusic_on.gif";
mus_off = new Image();	mus_off.src = def_path+"images/roll/smusic_off.gif";
sho_on = new Image();	sho_on.src = def_path+"images/roll/sshowdates_on.gif";
sho_off = new Image();	sho_off.src = def_path+"images/roll/sshowdates_off.gif";
mai_on = new Image();	mai_on.src = def_path+"images/roll/smaillist_on.gif";
mai_off = new Image();	mai_off.src = def_path+"images/roll/smaillist_off.gif";
blo_on = new Image();	blo_on.src = def_path+"images/roll/snewsblog_on.gif";
blo_off = new Image();	blo_off.src = def_path+"images/roll/snewsblog_off.gif";
pre_on = new Image();	pre_on.src = def_path+"images/roll/spress_on.gif";
pre_off = new Image();	pre_off.src = def_path+"images/roll/spress_off.gif";
con_on = new Image();	con_on.src = def_path+"images/roll/scontact_on.gif";
con_off = new Image();	con_off.src = def_path+"images/roll/scontact_off.gif";
}