var state = 0;
function LeftOverA(tbobj, imgobj) {
	state = 1;
	document.getElementById("tbshow").innerHTML = "";
	imgobj.background = "images/r1.gif";
	tbobj.background = "images/C_.gif";
}
function LeftOutA(tbobj, imgobj) {
	state = 0;
	imgobj.background = "images/b1.gif";
	//tbobj.background = "images/A_.gif";
}
function LeftOverB(tbobj, imgobj) {
	state = 1;
	document.getElementById("tbshow").innerHTML = "";
	imgobj.background = "images/r2.gif";
	tbobj.background = "images/B_.gif";
}
function LeftOutB(tbobj, imgobj) {
	state = 0;
	imgobj.background = "images/b2.gif";
	//tbobj.background = "images/A_.gif";
}
function LeftOverC(tbobj, imgobj) {
	state = 1;
	document.getElementById("tbshow").innerHTML = "";
	imgobj.background = "images/r3.gif";
	tbobj.background = "images/A_.gif";
}
function LeftOutC(tbobj, imgobj) {
	state = 0;
	imgobj.background = "images/b3.gif";
	//tbobj.background = "images/A_.gif";
}
function LeftOverD(tbobj, imgobj) {
	state = 1;
	document.getElementById("tbshow").innerHTML = "";
	imgobj.background = "images/r4.gif";
	tbobj.background = "images/D_.gif";
}
function LeftOutD(tbobj, imgobj) {
	state = 0;
	imgobj.background = "images/b4.gif";
	//tbobj.background = "images/A_.gif";
}
var pic_src = new Array();
var link_url = new Array();
var pic_alt = new Array();
pic_src[0] = "images/A_.gif";
link_url[0] = "#";
pic_alt[0] = "pic1";
pic_src[1] = "images/B_.gif";
link_url[1] = "#";
pic_alt[1] = "pic2";
pic_src[2] = "images/C_.gif";
link_url[2] = "#";
pic_alt[2] = "pic3";
pic_src[3] = "images/D_.gif";
link_url[3] = "#";
pic_alt[3] = "pic4";
var num = 0;
function chang_img() {
	if (state == 0) {
		str = "<img src='" + pic_src[num] + "' WIDTH=664 height=256 border=0>";
		document.getElementById("tbshow").innerHTML = str;
		num = (num >= pic_src.length - 1) ? 0 : num + 1;
		setTimeout(" chang_img()", 2000);
	}
}