function validateData(y_id1,m_id1,d_id1,y_id2,m_id2,d_id2,language)
{
 
var message = "";

var y1= document.getElementById(""+y_id1).value;
var m1= parseInt(document.getElementById(""+m_id1).value)-1;
var d1= document.getElementById(""+d_id1).value;

var y2= document.getElementById(""+y_id2).value;
var m2= parseInt(document.getElementById(""+m_id2).value)-1;
var d2= document.getElementById(""+d_id2).value;

var pdate=new Date(y1,m1,d1);
var ddate=new Date(y2,m2,d2);


 if(language=='pt')
     message="A data de recolha não pode ser maior que a data de entrega!";
 
  else
        message="The pickup date could not be greater than dropoff date!";


if(pdate>ddate){

  alert(message);
  document.getElementById(""+d_id1).focus();
  return false;

}

else 
     return true; 


}