var scriptsOn = false;



if (((navigator.appName == "Netscape") 

    && (parseInt(navigator.appVersion) >= 3)) ||

   ((navigator.appName == "Microsoft Internet Explorer") 

    && (parseInt(navigator.appVersion) >=4)))

   scriptsOn = true;



function RegisterImage(imgName, imgOn, imgOff)

{

    if (scriptsOn) {

        eval (imgName + "On = new Image()");

        eval (imgName + "On.src = \"" + imgOn + "\"");

        eval (imgName + "Off = new Image()");

        eval (imgName + "Off.src = \"" + imgOff + "\"");

    }

}



function ImageOver(imgName)

{

    if (scriptsOn)

        eval ("document." + imgName + ".src = " + imgName + "On.src");

}



function ImageOut(imgName)

{

    if (scriptsOn)

        eval ("document." + imgName + ".src = " + imgName + "Off.src");

}



RegisterImage ("lsipka", "ooo/lsipka02.gif", "ooo/lsipka01.gif");