var goodbrwsr = 0;
browserName = navigator.appName.substring(0,8);
fullName    = navigator.appName;
fullVer     = navigator.appVersion;
if ( browserName == "Netscape" ) {
 browserVer = navigator.appVersion.substring(0,1);
}
if ( browserName == "Microsof" ) {
 browserVer = navigator.appVersion.substring(22,23); 
}
if (browserName == "Netscape" && browserVer >= 3){
	goodbrwsr = 1; 
} 
if (browserName == "Microsof" && browserVer >= 4) {
	goodbrwsr = 1;
} 
if (goodbrwsr) {
        hbtn1a = new Image();
        hbtn1a.src = "images/stage1.gif";
        hbtn1b = new Image();
        hbtn1b.src = "images/stage1-over.gif";
        hbtn2a = new Image();
        hbtn2a.src = "images/stage2.gif";        
        hbtn2b = new Image();
        hbtn2b.src = "images/stage2-over.gif";
        hbtn3a = new Image();
        hbtn3a.src = "images/stage3.gif";        
        hbtn3b = new Image();
        hbtn3b.src = "images/stage3-over.gif";
        hbtn4a = new Image();
        hbtn4a.src = "images/home.gif";        
        hbtn4b = new Image();
        hbtn4b.src = "images/home-over.gif";
}

function hbtn1_onmouseover() {
	if (goodbrwsr) {
		imgOn = hbtn1b.src;
		document.b1tn1.src = imgOn;
	}		
}
function hbtn1_onmouseout() {
	if (goodbrwsr) {
		imgOff = hbtn1a.src;
		document.b1tn1.src = imgOff;
	}			
}
function hbtn2_onmouseover() {
	if (goodbrwsr) {
		imgOn = hbtn2b.src;
		document.b1tn2.src = imgOn;
	}				
}
function hbtn2_onmouseout() {
	if (goodbrwsr) {
		imgOff = hbtn2a.src;
		document.b1tn2.src = imgOff;
	}				
}
function hbtn3_onmouseover() {
	if (goodbrwsr) {
		imgOn = hbtn3b.src;
		document.b1tn3.src = imgOn;
	}				
}
function hbtn3_onmouseout() {
	if (goodbrwsr) {
		imgOff = hbtn3a.src;
		document.b1tn3.src = imgOff;
	}				
}
function hbtn4_onmouseover() {
	if (goodbrwsr) {
		imgOn = hbtn4b.src;
		document.b1tn4.src = imgOn;
	}				
}
function hbtn4_onmouseout() {
	if (goodbrwsr) {
		imgOff = hbtn4a.src;
		document.b1tn4.src = imgOff;
	}				
}
function hbtn5_onmouseover() {
	if (goodbrwsr) {
		imgOn = hbtn5b.src;
		document.b1tn5.src = imgOn;
	}				
}
function hbtn5_onmouseout() {
	if (goodbrwsr) {
		imgOff = hbtn5a.src;
		document.b1tn5.src = imgOff;
	}				
}
function hbtn6_onmouseover() {
	if (goodbrwsr) {
		imgOn = hbtn6b.src;
		document.b1tn6.src = imgOn;
	}				
}
function hbtn6_onmouseout() {
	if (goodbrwsr) {
		imgOff = hbtn6a.src;
		document.b1tn6.src = imgOff;
	}				
}
function hbtn7_onmouseover() {
	if (goodbrwsr) {
		imgOn = hbtn7b.src;
		document.b1tn7.src = imgOn;
	}				
}
function hbtn7_onmouseout() {
	if (goodbrwsr) {
		imgOff = hbtn7a.src;
		document.b1tn7.src = imgOff;
	}				
}
function hbtn8_onmouseover() {
	if (goodbrwsr) {
		imgOn = hbtn8b.src;
		document.b1tn8.src = imgOn;
	}				
}
function hbtn8_onmouseout() {
	if (goodbrwsr) {
		imgOff = hbtn8a.src;
		document.b1tn8.src = imgOff;
	}				
}