bname = navigator.appName;
    bver = parseFloat(navigator.appVersion);    
    v4=false;
    if (bver >= 4)
    	{
		v4=true;
		ba1=new Image(); ba2=new Image ();
		ba1.src="pic/let/b21.gif"; ba2.src="pic/let/b21a.gif";
		bb1=new Image(); bb2=new Image ();
		bb1.src="pic/let/b22.gif"; bb2.src="pic/let/b22a.gif";
		bc1=new Image(); bc2=new Image ();
		bc1.src="pic/let/b23.gif"; bc2.src="pic/let/b23a.gif";		
		
		
		aimg=new Image();
		aimg.src="pic/rent/pa.gif";
		bimg=new Image();
		bimg.src="pic/let/pa.gif";
		cimg=new Image();
		cimg.src="pic/buy/pa.gif";
		dimg=new Image();
		dimg.src="pic/sell/pa.gif";
		
		zerooff = new Image();
		zerooff.src = "pic/let/p.gif";

		}
    else (alert("WARNING !!! Your browser is too old and will not display the page optimally !\n           Please upgrade to Netscape Communicator 4.X\n        Download it FREE from http://home.netscape.com !"));
    

		
	function img_on(imgName)
		{
			if(document.images)
    		   {
                descrimgOn = eval(imgName + "img.src");
                document["img"].src = descrimgOn;
				}       
		}

function img_off(imgName)
		{
        	if(document.images)
        		{
                descrimgOff = eval(imgName + "off.src");
                document["img"].src = descrimgOff;
		        }
		}