function chkFormular()
{
	if(document.sendtofriend.name.value == "")
    {
     alert("Please add your name!");
     document.sendtofriend.name.focus();
     return false;
    }	
   if(document.sendtofriend.friendname.value == "")
    {
     alert("Please add the name from your friend!");
     document.sendtofriend.friendname.focus();
     return false;
    }
	if(document.sendtofriend.youremail.value == "")
    {
     alert("Please add your email adress!");
     document.sendtofriend.youremail.focus();
     return false;
    }	
	var reg = /.+@.+\..+/;
	var str = document.sendtofriend.youremail.value;	
	if (!reg.exec(str))
	{
     alert("Your email adress is not correct!");
     document.sendtofriend.youremail.focus();
     return false;
    }	
	if(document.sendtofriend.email.value == "")
    {
     alert("Please add the email adress from your friend!");
     document.sendtofriend.email.focus();
     return false;
    }	
	var reg = /.+@.+\..+/;
	var str = document.sendtofriend.email.value;	
	if (!reg.exec(str))
	{
     alert("The email adress from your friend is not correct!");
     document.sendtofriend.email.focus();
     return false;
    }	
}