function gerarEndereco(link, alt, larg){
var aux = "<img src=" +"'" + link +"'";
if (larg != ""){aux = aux + " width=" +"'"+ larg +"'";}
if (alt != ""){aux = aux +" heigth=" +"'" + alt +"'";}
aux = aux + "/>";
document.getElementById("orkut").value = aux;
}