isamap = new Object();

isamap[0] = "_0";
isamap[1] = "_1";

function pictact(id, act)

{
        if(document.images) document.images[id].src = eval( "pict." + id + isamap[act] + ".src");
}

if (document.images) { // ensure browser can do JavaScript rollovers.

pict = new Object();

pict.index0_0 = new Image();
pict.index0_0.src = "menu/m1.gif";
pict.index0_1 = new Image();
pict.index0_1.src = "menu/m1_1.gif";

pict.index1_0 = new Image();
pict.index1_0.src = "menu/m2.gif";
pict.index1_1 = new Image();
pict.index1_1.src = "menu/m2_1.gif";

pict.index2_0 = new Image();
pict.index2_0.src = "menu/m3.gif";
pict.index2_1 = new Image();
pict.index2_1.src = "menu/m3_1.gif";

pict.index3_0 = new Image();
pict.index3_0.src = "menu/m4.gif";
pict.index3_1 = new Image();
pict.index3_1.src = "menu/m4_1.gif";
}