var img1 = "images/header/bcp0200_headmid.gif"
var img2 = "images/header/bcp0200_headmid2.gif"
var img3 = "images/header/bcp0200_headmid3.gif"
var img4 = "images/header/bcp0200_headmid4.gif"
var img5 = "images/header/bcp0200_headmid5.gif"
var img6 = "images/header/bcp0200_headmid6.gif"

var randomize = Math.round(Math.random()*6) 

if (randomize == 1){ 
newimg = img1 
}else if (randomize == 2){ 
newimg = img2 
}else if (randomize == 3){ 
newimg = img3
}else if (randomize == 4){ 
newimg = img4
}else if (randomize == 5){ 
newimg = img5
}else{ newimg = img6 
}
document.write('<IMG SRC="'+newimg+'">')