var iniPic = "";

function iniDPic() {
	iniPic = document.getElementById('bPic').src;
}

function bpChange(num) {
	var tPic = document.getElementById('bPic').src;
	var dPic = "bp";

	dPic += num+".jpg";

	imgDir = tPic.substr(0,tPic.lastIndexOf("/")+1);
	
	document.getElementById('bPic').src = imgDir+dPic;
}

function bpClear(num) {
	document.getElementById('bPic').src = iniPic;
}