if (document.images) {
   btn0a = new Image
   btn0b = new Image
   btn1a = new Image
   btn1b = new Image
   btn2a = new Image
   btn2b = new Image
   btn3a = new Image
   btn3b = new Image
   btn4a = new Image
   btn4b = new Image
   btn5a = new Image
   btn5b = new Image
   btn6a = new Image
   btn6b = new Image
   btn7a = new Image
   btn7b = new Image
   sat1a = new Image
   sat1b = new Image
   sat2a = new Image
   sat2b = new Image
   sat3a = new Image
   sat3b = new Image
   cobtn1a = new Image
   cobtn1b = new Image
   homecobtn1a = new Image
   homecobtn1b = new Image
   homecobtn2a = new Image
   homecobtn2b = new Image
   homecobtn3a = new Image
   homecobtn3b = new Image
   
   btn0a.src = "../images/btn00.gif"
   btn0b.src = "../images/btn00-over.gif"
   btn1a.src = "../images/btn01.gif"
   btn1b.src = "../images/btn01-over.gif"
   btn2a.src = "../images/btn02.gif"
   btn2b.src = "../images/btn02-over.gif"
   btn3a.src = "../images/btn03.gif"
   btn3b.src = "../images/btn03-over.gif"
   btn4a.src = "../images/btn04.gif"
   btn4b.src = "../images/btn04-over.gif"
   btn5a.src = "../images/btn05.gif"
   btn5b.src = "../images/btn05-over.gif"
   btn6a.src = "../images/btn06.gif"
   btn6b.src = "../images/btn06-over.gif"
   btn7a.src = "../images/btn07.gif"
   btn7b.src = "../images/btn07-over.gif"
   sat1a.src = "../images/int-satnav1.gif"
   sat1b.src = "../images/int-satnav1-over.gif"
   sat2a.src = "../images/int-satnav2.gif"
   sat2b.src = "../images/int-satnav2-over.gif"
   sat3a.src = "../images/int-satnav3.gif"
   sat3b.src = "../images/int-satnav3-over.gif"
   cobtn1a.src = "../images/int_co-btn_more.gif"
   cobtn1b.src = "../images/int_co-btn_more-over.gif"
   homecobtn1a.src = "../images/home_co-morebtn.gif"
   homecobtn1b.src = "../images/home_co-morebtn-over.gif"
   homecobtn2a.src = "../images/home_co-morebtn.gif"
   homecobtn2b.src = "../images/home_co-morebtn-over.gif"
   homecobtn3a.src = "../images/home_co-morebtn.gif"
   homecobtn3b.src = "../images/home_co-morebtn-over.gif"
}

else {
   btn0a = ""
   btn0b = ""
   btn1a = ""
   btn1b = ""
   btn2a = ""
   btn2b = ""
   btn3a = ""
   btn3b = ""
   btn4a = ""
   btn4b = ""
   btn5a = ""
   btn5b = ""
   btn6a = ""
   btn6b = ""
   btn7a = ""
   btn7b = ""
   cobtn1a = ""
   cobtn1b = ""
   homecobtn1a = ""
   homecobtn1b = ""
   homecobtn2a = ""
   homecobtn2b = ""
   homecobtn3a = ""
   homecobtn3b = ""
   document.btn0 = ""
   document.btn1 = ""
   document.btn2 = ""
   document.btn3 = ""
   document.btn4 = ""
   document.btn5 = ""
   document.btn6 = ""
   document.btn7 = ""
   document.sat1 = ""
   document.sat2 = ""
   document.sat3 = ""
   document.cobtn1 = ""
   document.cobtn2 = ""
   document.cobtn3 = ""
   document.homecobtn1 = ""
   document.homecobtn2 = ""
   document.homecobtn3 = ""
}