var BrowserName = navigator.appName;
var BrowserVers = parseInt(navigator.appVersion);
		
if ((BrowserName == 'Netscape' && BrowserVers >= 3)||
            (BrowserName == 'Microsoft Internet Explorer' && BrowserVers >= 4)){

			
b_1 = new Image();
b_1.src = "/images/b_1.gif";
b_1x = new Image();
b_1x.src = "/images/b_1x.gif";

b_2 = new Image();
b_2.src = "/images/b_2.gif";
b_2x = new Image();
b_2x.src = "/images/b_2x.gif";

b_3 = new Image();
b_3.src = "/images/b_3.gif";
b_3x = new Image();
b_3x.src = "/images/b_3x.gif";

b_4 = new Image();
b_4.src = "/images/b_4.gif";
b_4x = new Image();
b_4x.src = "/images/b_4x.gif";

b_5 = new Image();
b_5.src = "/images/b_5.gif";
b_5x = new Image();
b_5x.src = "/images/b_5x.gif";

b_6 = new Image();
b_6.src = "/images/b_6.gif";
b_6x = new Image();
b_6x.src = "/images/b_6x.gif";
			
}                                              //of if

function MarkPlay(imgDocID1,imgObjName1) {

if ((BrowserName == 'Netscape' && BrowserVers >= 3)||
            (BrowserName == 'Microsoft Internet Explorer' && BrowserVers >= 4)){

                document.images[imgDocID1].src = eval(imgObjName1 + ".src");
                }                                       // of if
}                                       // of function