function checkEmail() {

//alert('125');

var email = document.getElementById('Email');

var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;

	if (!filter.test(email.value)) {

	alert('Please provide a valid email address');

	email.focus

	return false;

	}

return true;

}



function form_submit()

{		





        document.getElementById("form2").Firstname.className = "input-box"

		document.getElementById("form2").Surname.className = "input-box"

		document.getElementById("form2").Email.className = "input-box"

		document.getElementById("form2").Comments.className = "input-box"

		

	

		if ( document.getElementById("form2").Firstname.value.length <= 2 )

		{

			alert ("Please enter a valid First Name in the field provided.");

			document.getElementById("form2").Firstname.className = "input-box-error"

			document.getElementById("form2").Firstname.focus();

			return false;

		}

		if ( document.getElementById("form2").Surname.value.length <= 2 )

		{

			alert ("Please enter a valid Last Name in the field provided.");

			document.getElementById("form2").Surname.className = "input-box-error"

			document.getElementById("form2").Surname.focus();

			return false;

		}

	

		if ( document.getElementById("form2").Email.value.length == 0 )

		{

			alert ("You must enter a valid email address in the field provided.");

			document.getElementById("form2").Email.className = "input-box-error"

			document.getElementById("form2").Email.focus();

			return false;

		}

		

					

    	if (document.getElementById("Email").value.length > 0 && !checkEmail() )

	       {

	     //  alert ("email is invalid.");

		   

		   

		   document.getElementById("form2").Email.className = "input-box-error"

		   document.getElementById("form2").Email.focus();

		   return false;

		  

	       }

		

		if ( document.getElementById("form2").Comments.value.length == 0 )

		{

			alert ("Please enter Comments");

			document.getElementById("form2").Comments.className = "input-box-error"

			document.getElementById("form2").Comments.focus();

			return false;

		}

		

		load_form_new(); 	

		return true;

		

}











function get_val(id_name)

{ 



	if (document.getElementById(id_name) != null )

		return document.getElementById(id_name).value;

}



function load_form_new()

{  

   

	xmlhttp= (window.XMLHttpRequest ? new XMLHttpRequest(): ((window.ActiveXObject) ? new ActiveXObject("Microsoft.XMLHTTP") : null) );

	xmlhttp.onreadystatechange=state_change

	xmlhttp.open("POST",'./contact_us_cn/send-mail.php',false)

	xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

	var send_val = '';

	

	



	

	

	if ( get_val('send_contact') == 'Submit' ) 

	{   

	   send_val= 'send_contact='+get_val('send_contact')+'&Subject='+ get_val('Subject')+'&Firstname='+ get_val('Firstname')+'&Surname='+ get_val('Surname')+'&Telephone='+ get_val('Telephone')+'&Email='+ get_val('Email')+'&Comments='+ get_val('Comments'); 

	}

 	 xmlhttp.send(send_val);

     //alert (xmlhttp.responseText);

	 document.getElementById('div_contact_us').innerHTML= xmlhttp.responseText;

	 //alert()

	 document.getElementById('cn_hidden').style.display='none';

	 

 



}





function state_change()

{

  if (xmlhttp.readyState==4)

  {

  }

}