Allineamento colonne tabella html5

[marco moffa]

 var riga= document.createElement("tr");
    //var riga=document.getElementById(g)
  //var riga_ruolo=document.crea teElement("tr")
   var cella= document.createElement("td");
   var cella1=document.createElement("td")
   var cella2=document.createElement("td")
   cella.style.border="solid";
  
   cella1.style.border="solid";
  
   cella2.style.border="solid";
  
  
   
   cella.innerText=ruol[u][1];
   cella1.innerText=ruol[u][2]
   cella2.innerText=ruol[u][4]
   riga.appendChild(cella); 
   riga.appendChild(cella1);
   riga.appendChild(cella2);
   posizione.appendChild(riga)