var max      = 10;  
var nrImages = 4;  
function makeImages() 
{    
this[0]     = "foto1.jpg";    
this[1]     = "foto2.jpg";    
this[2]     = "foto3.jpg";    
this[3]     = "foto4.jpg"; 
 //this[5]     = "imagem6.gif";    
this.length = nrImages;  } 
 function makeLinks() {  
 this[0]     = "portfolio_buffet/portfolio.html";   
this[1]     = "portfolio_casamento/portfolio.html";   
this[2]     = "portfolio_modelo/portfolio.html";   
this[3]     = "portfolio_still/portfolio.html";    
//this[3]     = "www.link4.com.br";    
//this[4]     = "www.link5.com.br";    
//this[5]     = "www.link6.com.br";   

 this.length = nrImages;  }  
var vetImages = new makeImages();  
var vetLinks  = new makeLinks(); 
 var x = Math.round(Math.random()*max);  
var y    = max / nrImages;  
for(var cont = 1;cont*y <= max;cont++) {    
if (x <= (cont*y)) {      
document.write("<a href="+vetLinks[cont-1]+" target=_self><img  src="+vetImages[cont-1]+" border=0></a>");      break;    }  }				//var fo = new("100%", "100%", "8", "#181818");