function RecommendUs(){

	if(document.getElementById("email").value == ""){
	
	document.getElementById("error_email").innerHTML = 'Please enter the email address.';
	document.getElementById("email").focus();
	return false;

	}else if(!validate(document.getElementById("email").value)){
			
	document.getElementById("error_email").innerHTML = 'Please enter valid email address.';
	document.getElementById("email").focus();
	return false;

	}

	return true;
}


function Invitations(){

	if(document.getElementById("email").value == ""){
	
	document.getElementById("error_email").innerHTML = 'Please enter the email address.';
	document.getElementById("email").focus();
	return false;

	}else if(!validate(document.getElementById("email").value)){
			
	document.getElementById("error_email").innerHTML = 'Please enter valid email address.';
	document.getElementById("email").focus();
	return false;

	} 

    if(document.getElementById("message").value == ""){
	
	document.getElementById("error_message").innerHTML = 'Please enter message.';
	document.getElementById("message").focus();
	return false;

	}

	return true;
}



function validate(address) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;   
   if(reg.test(address) == false) {      
      return false;
   }else return true;
}