myPix=new Array("images/main/bdl1.gif",
	"images/main/bdl2.gif", "images/main/bdl3.gif", 
"images/main/fpgs.gif",
	"images/main/mainfatcell.gif")
	imgCt=myPix.length
	
function chooseMainPic() {
	if (document.images) {
		randomNum=Math.floor
		((Math.random() * imgCt))
		document.myMainPic.src=
		myPix[randomNum]
	}
}