function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||value=="")
  {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(Jobtitle,"Please enter your job title")==false)
  {Jobtitle.focus();return false;} 

if (validate_required(Company,"Please enter your company")==false)
  {Company.focus();return false;} 

if (validate_required(Country,"Please enter your city")==false)
  {Country.focus();return false;}   

if (validate_required(Email,"Please enter your email address")==false)
  {Email.focus();return false;}  
  
if (validate_required(Phone,"Please enter your telephone number")==false)
  {Phone.focus();return false;}  
  



  
}
}