var sty='/i/mb/mb-1-';
var str='/i/mb/mb-2-';
var sts='/i/mb/mb-3-';
var stp='/i/mb/mb-4-';
var stz='/i/mb/mb-0-';
var Y=141; 
var R=182; 
var S=66; 
var P=59; 
var Z=12;
var randy=Math.floor(Math.random()*Y)+1; 
var randr=Math.floor(Math.random()*R)+1; 
var rands=Math.floor(Math.random()*S)+1; 
var randp=Math.floor(Math.random()*P)+1; 
var randz=Math.floor(Math.random()*Z)+1; 

m0 = new Image (); 
m0.src = stz+randz+'.jpg';

m1a = new Image (); 
m1a.src = sty+randy+'.jpg'; 

m2a = new Image (); 
m2a.src = str+randr+'.jpg'; 

m3a = new Image (); 
m3a.src = sts+rands+'.jpg'; 

//m4 = new Image (); 
//m4.src = m0; 
//m4.src = "i/mb/m0.gif"; 
m4a = new Image (); 
m4a.src = stp+randp+'.jpg';
 
function switchImg(img1, img2) 
{document.images[img1].src = eval(img2 + '.src');}