function generate()
{

var possible = new String('0123456789bcdfghjkmnpqrstvwxyz'); 
var code = new String(''); 
while (code.length<6) 
{ 
  var randomChar = parseInt(Math.floor(Math.random() * (possible.length) + 1)); 
  var charFromPossible = possible.substring(randomChar,randomChar+1);
  code += charFromPossible;
}
            
document.forms[0].dpc.value = code;

}