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

if (validate_required(f_name,"Your first name must be filled out.")==false)
  {f_name.focus();return false;}

else if (validate_required(l_name,"Your last name must be filled out.")==false)
  {l_name.focus();return false;}
  
else if (validate_required(email,"Your E-mail must be filled out.")==false)
  {email.focus();return false;}
  
else if (validate_required(address,"Your address must be filled out.")==false)
  {address.focus();return false;}

else if (validate_required(city,"Your city must be filled out.")==false)
  {city.focus();return false;}
  
else if (validate_required(model,"You must choose a model.")==false)
  {model.focus();return false;}

else if (validate_required(purchase,"You must choose your purchase interest time frame.")==false)
  {purchase.focus();return false;}
  
else if (validate_required(source_hss,"How did you hear about Pioneer Family Pools?")==false)
  {source_hss.focus();return false;}

else if (validate_required(interested,"Please describe your request.")==false)
  {interested.focus();return false;}

else if (validate_required(comments,"Please add questions or comments.")==false)
  {comments.focus();return false;}

else if (validate_required(contact_via,"Please choose how you want to be contacted.")==false)
  {contact_via.focus();return false;}

else if (validate_required(ClosestCity,"Please choose your closest city.")==false)
  {ClosestCity.focus();return false;}
}
}