if (document.images) {
     button1 = new Image
     button2 = new Image

     button1.src = 'home_off.gif'
     button2.src = 'home_on5.gif'
 }

if (document.images) {
     button3 = new Image
     button4 = new Image

     button3.src = 'movies_off.gif'
     button4.src = 'movies_on5.gif'
 }

if (document.images) {
     button5 = new Image
     button6 = new Image

     button5.src = 'photoshop_off.gif'
     button6.src = 'photoshop_on5.gif'
 }

if (document.images) {
     button7 = new Image
     button8 = new Image

     button7.src = 'music_off.gif'
     button8.src = 'music_on5.gif'
 }

if (document.images) {
     button9 = new Image
     button10 = new Image

     button9.src = 'contact_off.gif'
     button10.src = 'contact_on5.gif'
 }