firstime = true;
img = new Array()

for(i=1;i<=5;i++) {
img[i] = new Image()
img[i].src = "m"+i+"a.gif"
}

function findout() {
i = 1;
mitem = "m1";
while (document.images[mitem].src.substring(document.images[mitem].src.lastIndexOf("m")) != mitem+'a.gif') {
i++;
mitem = "m"+i;}
return mitem;
}

function activ (what){
if (firstime==true) {
findout ();
firstime = false;
}
document.images[mitem].src = mitem+'.gif'
document.images[what].src = what+'a.gif'
}

function deactiv (what){
document.images[what].src = what+'.gif'
document.images[mitem].src = mitem+'a.gif'
}