function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||value==""||value=="day"||value=="month")
{alert(alerttxt);return false}
else {return true}
}
}

function validate_email(field,alerttxt)
{
with (field)
{
apos=value.indexOf("@")
dotpos=value.lastIndexOf(".")
if (apos<1||dotpos-apos<2) 
  {alert(alerttxt);return false}
else {return true}
}
}

function validate_form(thisform)
{
with (thisform)
{
if (validate_required(name,"Please enter your name")==false)
{name.focus();return false}
if (validate_required(email,"Please enter your email address")==false)
{email.focus();return false}
if (validate_required(phone,"Please enter your phone number")==false)
{phone.focus();return false}
if (validate_required(pickup,"Please enter your pick up address")==false)
{pickup.focus();return false}
if (validate_required(pickup_day,"Please enter the day of your pick up date")==false)
{pickup_day.focus();return false}
if (validate_required(pickup_month,"Please enter the month of your pick up date")==false)
{pickup_month.focus();return false}
if (validate_required(pickup_time,"Please enter the pick up time")==false)
{pickup_time.focus();return false}
if (validate_required(destination,"Please enter your destination address")==false)
{destination.focus();return false}


if (validate_email(email,"I think you've made a mistake with your email address")==false)
{email.focus();return false}

}
}