if (document.images)  {
top_oferty = new Image
top_ofirmie = new Image
top_info = new Image
top_kredyty = new Image
top_kontakt = new Image
top_menu = new Image
top_oferty.src = 'grafika/oferty_over.gif'
top_ofirmie.src = 'grafika/firma_over.gif'
top_info.src = 'grafika/info_over.gif'
top_kredyty.src = 'grafika/kredyty_over.gif'
top_kontakt.src = 'grafika/kontakt_over.gif'
top_menu.src = 'grafika/top-03.gif'
}  else  {
top_oferty = ""
top_ofirmie = ""
top_info = ""
top_kredyty = ""
top_kontakt = ""
top_menu = ""
document.topMenu = ""
}