var bpht1 = new Array();
var bpht2 = new Array();
for(var i=2;i<=7;i++){
	bpht1[i] = new Image();
	bpht1[i].src = "./img/b" + i + ".png";
	bpht2[i] = new Image();
	bpht2[i].src = "./img/bb" + i + ".png";
}
function bChg1(nb){
	var mtd = "b" + nb;
	document.getElementById(mtd).src = bpht1[nb].src;
}
function bChg2(nb){
	var mtd = "b" + nb;
	document.getElementById(mtd).src = bpht2[nb].src;
}
var ops = navigator.userAgent;
if(ops.toLowerCase().indexOf("win") != -1){
	if(ops.indexOf("Windows NT") != -1){
		if(eval(ops.charAt(ops.indexOf("Windows NT") + 11)) > 5){
			document.write("<style type='text/css' media='screen'><!--\nbody{ font-size:78%; }\n-->\n</style>\n");
		}
	}
}else{
	document.write("<style type='text/css' media='screen'><!--\nbody{ font-size:12px; }\n-->\n</style>\n");
}