button1_a= new Image();
button1_a.src = "./images/home/mainmenu_home.jpg"
button1_b= new Image();
button1_b.src = "./images/home/mainmenu_home_mo.jpg"

button2_a= new Image();
button2_a.src = "./images/home/mainmenu_unternehmen.jpg"
button2_b= new Image();
button2_b.src = "./images/home/mainmenu_unternehmen_mo.jpg"

button3_a= new Image();
button3_a.src = "./images/home/mainmenu_leistungen.jpg"
button3_b= new Image();
button3_b.src = "./images/home/mainmenu_leistungen_mo.jpg"

button4_a= new Image();
button4_a.src = "./images/home/mainmenu_presse.jpg"
button4_b= new Image();
button4_b.src = "./images/home/mainmenu_presse_mo.jpg"

button5_a= new Image();
button5_a.src = "./images/home/mainmenu_karriere.jpg"
button5_b= new Image();
button5_b.src = "./images/home/mainmenu_karriere_mo.jpg"

button6_a= new Image();
button6_a.src = "./images/home/mainmenu_kontakt.jpg"
button6_b= new Image();
button6_b.src = "./images/home/mainmenu_kontakt_mo.jpg"