var cando = false;
var browserName = navigator.appName;
var browserVer = parseInt(navigator.appVersion);
if (browserName == "Netscape" && browserVer >= 3) cando = true;
else if( browserVer >=4 ) cando=true;
if( cando ) {
        imag = new Array();
        imag[0] = "img/b10.gif";
        imag[1] = "img/b11.gif";
        imag[2] = "img/b20.gif";
        imag[3] = "img/b21.gif";
        imag[4] = "img/b30.gif";
        imag[5] = "img/b31.gif";
        imag[6] = "img/b40.gif";
		imag[7] = "img/b41.gif";
		imag[8] = "img/b50.gif";
		imag[9] = "img/b51.gif";
		imag[10] = "img/b60.gif";
		imag[11] = "img/b61.gif";
		imag[12] = "img/b70.gif";
		imag[13] = "img/b71.gif";
		imag[14] = "img/b80.gif";
		imag[15] = "img/b81.gif";
		imag[16] = "img/b90.gif";
		imag[17] = "img/b91.gif";
		imag[18] = "img/b100.gif";
		imag[19] = "img/b101.gif";

        im = new Array()
        for (var i = 0; i < imag.length; i++){
                if( imag[i] != "" ) {
                        im[i] = new Image();
                        im[i].src = imag[i];
                }
        }
}

function swtch(num,imgname){
        if( cando ) {
        	eval("document.getElementById('"+imgname+"').src = im[num].src;");
        	
        }
}