bName = navigator.appName;
bVer = parseInt(navigator.appVersion);
    if ((bName == "Netscape" && bVer >= 3) || 
        (bName == "Microsoft Internet Explorer" && bVer >= 4)) br = "n3"; 
    else br = "n2";

if (br== "n3") {
    img1on = new Image();           	     
    img1on.src = "images/btnhealthon.gif";      
    img2on = new Image();           	     
    img2on.src = "images/btnofficeon.gif";    
    img3on = new Image();           	     
    img3on.src = "images/btnretailon.gif";  
	img4on = new Image();           	     
    img4on.src = "images/btnhospon.gif";     
    img5on = new Image();           	     
    img5on.src = "images/btnschoolon.gif";
	img6on = new Image();           	     
    img6on.src = "images/btnalivingon.gif";
	img7on = new Image();           	     
    img7on.src = "images/btnhomeofficeon.gif";
	img8on = new Image();           	     
    img8on.src = "images/btnmodularon.gif";
	img9on = new Image();           	     
    img9on.src = "images/btninfoon.gif";      

    img1off = new Image();              
	img1off.src = "images/btnhealth.gif";  
	img2off = new Image();              
    img2off.src = "images/btnoffice.gif";
    img3off = new Image();              
    img3off.src = "images/btnretail.gif";  
    img4off = new Image();           	     
    img4off.src = "images/btnhosp.gif";
	img5off = new Image();              
    img5off.src = "images/btnschool.gif";
	img6off = new Image();           	     
    img6off.src = "images/btnaliving.gif";
	img7off = new Image();           	     
    img7off.src = "images/btnhomeoffice.gif";
	img8off = new Image();              
    img8off.src = "images/btnmodular.gif";
	img9off = new Image();           	     
    img9off.src = "images/btninfo.gif";  
}

function rollon(imgName) {
    if (br == "n3") {
    document[imgName].src = eval(imgName + "on.src");
    }
}

function rolloff(imgName) {
    if (br == "n3") {
    document[imgName].src = eval(imgName + "off.src");
    }
}

function spawnWindow(urlgraphic) {
	popupWin = window.open(urlgraphic, 'imgWin', 'width=348,height=348')
	popupWin.focus()
 }