function getAppVersion() {
		appname= navigator.appName;
		appversion = navigator.appVersion;
		majorver = appversion.substring(0, 1); 
		if ( (appname == "Netscape") && ( majorver >= 3 ) ) return 1;
		if ( (appname == "Microsoft Internet Explorer") && (majorver >= 4) ) return 1;
        return 0;
}

function swtch(num, imgname) {
        if (getAppVersion())
                imgname.src = img[num].src;
}
imgsrc = new Array();
imgsrc[0]  = "../images/dut1.gif";
imgsrc[1]  = "../images/dut1a.gif";
imgsrc[2]  = "../images/dut1.gif";
imgsrc[3]  = "../images/dut1b.gif";
imgsrc[4]  = "../images/dut1.gif";
imgsrc[5]  = "../images/dut1c.gif";
imgsrc[6]  = "../images/dut1.gif";
imgsrc[7]  = "../images/dut1d.gif";
imgsrc[8]  = "../images/dut1.gif";
imgsrc[9]  = "../images/dut1e.gif";
imgsrc[10]  = "../images/dut2.gif";
imgsrc[11]  = "../images/dut2a.gif";
imgsrc[12]  = "../images/dut2.gif";
imgsrc[13]  = "../images/dut2b.gif";
imgsrc[14]  = "../images/dut4.gif";
imgsrc[15]  = "../images/dut4a.gif";
imgsrc[16]  = "../images/dut4.gif";
imgsrc[17]  = "../images/dut4b.gif";
imgsrc[18]  = "../images/dut4.gif";
imgsrc[19]  = "../images/dut4c.gif";
imgsrc[20]  = "../images/dut4.gif";
imgsrc[21]  = "../images/dut4d.gif";
imgsrc[22]  = "../images/dut4.gif";
imgsrc[23]  = "../images/dut4e.gif";
imgsrc[24]  = "../images/dut4.gif";
imgsrc[25]  = "../images/dut4f.gif";
imgsrc[26]  = "../images/dut9.gif";
imgsrc[27]  = "../images/dut9a.gif";
imgsrc[28]  = "../images/dut9.gif";
imgsrc[29]  = "../images/dut9b.gif";
imgsrc[30]  = "../images/dut9.gif";
imgsrc[31]  = "../images/dut7.gif";
imgsrc[32]  = "../images/dut7a.gif";
imgsrc[33]  = "../images/dut7.gif";
imgsrc[34]  = "../images/dut7b.gif";
imgsrc[35]  = "../images/dut8.gif";
imgsrc[36]  = "../images/dut8a.gif";
imgsrc[37]  = "../images/dut8.gif";
imgsrc[38]  = "../images/dut8b.gif";
imgsrc[39]  = "../images/dut10.gif";
imgsrc[40]  = "../images/dut10a.gif";

imgsrc[45]  = "../images/haldut12.gif";
imgsrc[46]  = "../images/haldut12a.gif";
imgsrc[47]  = "../images/haldut12.gif";
imgsrc[48]  = "../images/haldut12b.gif";

imgsrc[49]  = "../images/haldut13.gif";
imgsrc[50]  = "../images/haldut13a.gif";
imgsrc[51]  = "../images/haldut13.gif";
imgsrc[52]  = "../images/haldut13b.gif";

imgsrc[53]  = "../images/haldut10.gif";
imgsrc[54]  = "../images/haldut10a.gif";

imgsrc[55]  = "../images/imgdut13.gif";
imgsrc[56]  = "../images/imgdut13a.gif";
imgsrc[57]  = "../images/imgdut13.gif";
imgsrc[58]  = "../images/imgdut13b.gif";

imgsrc[59]  = "../images/imgdut10.gif";
imgsrc[60]  = "../images/imgdut10a.gif";

imgsrc[61]  = "../images/newdut13.gif";
imgsrc[62]  = "../images/newdut13a.gif";
imgsrc[63]  = "../images/newdut13.gif";
imgsrc[64]  = "../images/newdut13b.gif";

imgsrc[65]  = "../images/newdut10.gif";
imgsrc[66]  = "../images/newdut10a.gif";
if (getAppVersion()) {
        img = new Array();
        for (i = 0; i < imgsrc.length; i++) {
                img[i] = new Image();
                img[i].src = imgsrc[i];
        }
}