var showToPassenger;
var toNumber;

showToPassenger =3 ;

function ShowToPassenger(addBy)
{
    showToPassenger = showToPassenger + addBy;
    if (showToPassenger > 75) showToPassenger = 75;
    if (showToPassenger < 1) showToPassenger =  1;
    for (i = 1; i <=75; i++)
    {
        
            var onRow = document.getElementById("Passenger_" + i);
            var onName = document.getElementById("AirPassenger" + i + "FirstName");
            var onMiddle = document.getElementById("AirPassenger" + i + "MiddleName"); 
            var onLast = document.getElementById("AirPassenger" + i + "LastName"); 
            var onDOB = document.getElementById("AirPassenger" + i + "DOB"); 
            var onGender = document.getElementById("AirPassenger" + i + "Gender_0");
            
            /*
            if (i <=70 && addBy==0)
            {
                onName.value = 'First' + i;
                onMiddle.value = 'Middle' + i;
                onLast.value = 'Last' + i;
                onDOB.value = '4/1/1990';
                onGender.checked = true;
            }
            */
            
            if (onRow !=null)
            {
            
                if (i <= showToPassenger 
                    || onName.value != '' || onMiddle.value !='' || onLast.value !='' || onDOB.value !='')
                {
                    onRow.style.display = "block";
                }
                else
                {
                    onRow.style.display = "none";
                    
                } 
            
            }
       
        
   }
    
}