/* Main Rollover Script */

Browser = false ;
if(navigator.appName.indexOf("Netscape") != -1)
{ if( (navigator.appVersion.indexOf("3.") != -1) || (navigator.appVersion.indexOf("4.") != -1) )
Browser = true}
if(navigator.appVersion.indexOf("MSIE") != -1) { if( navigator.appVersion.indexOf("4.") != -1)
Browser=true}
if ( Browser == true) {

bttn_learn_off= new Image();
bttn_learn_off.src = "images/bttn_learn_off.gif";
bttn_learn_on = new Image();
bttn_learn_on.src = "images/bttn_learn_on.gif";

}

function byt(place, imgName) {
if (Browser == true) {
document[place].src =eval(imgName + ".src");
} }

/* */