function validateform()
{
if(document.forms["contact"].elements["name"].value.length == 0)
{ 
alert('Please enter your Name.');
contact.name.focus()
return false;
}

if(document.forms["contact"].elements["email"].value.length == 0)
{ 
alert('Please enter your Email Address.');
contact.email.focus()
return false;
}

if(document.forms["contact"].elements["email"].value.indexOf('@') < 0)
{ 
alert('Please enter a valid Email Address.'); 
contact.email.focus()
return false;
}

if(document.forms["contact"].elements["email"].value.indexOf('.') < 0)
{ 
alert('Please enter a valid Email Address.');
contact.email.focus()
return false;
}

if(document.forms["contact"].elements["message"].value.length == 0)
{ 
alert('Please enter your Message.');
contact.message.focus()
return false;
}

return true;
}

function email_sent()
{
alert('Your enquiry has been sent. Thank you for contacting us. We shall reply shortly.');
}