// JavaScript Document
function texttrim(sValue)
{
	return sValue.replace(/^\s+|\s+$/g, "");
}

function check_empty_field(item_id, alerttext) {
	 itemvalue = document.getElementById(item_id).value;	 
	 if (texttrim(itemvalue) == "") { 
		 alert(alerttext); 
	 	return(false);
	 }
	 
	 return(true);
}


function check_latin_letter(item_id, alerttext, qty) {
	
	itemvalue = document.getElementById(item_id).value;
	var re_latin = /^[a-zA-Z0-9\s \(\)\-\*\/_=\+\|&\^%$#@!~`"'\?><,\.]{3,}$/;
	
	if (itemvalue != "") {
		 if(!itemvalue.match(re_latin) || itemvalue.length > qty) {		 	
		 	alert(alerttext);
			return(false);
		}
	}
	 return(true);
}

function check_user_registration()  {

	if (!check_empty_field('name', "Please enter your name")) return false;; 	
 	if (!check_empty_field('street', "Please enter your street name.")) return false;
 	if (!check_empty_field('city', "Please enter your city name.")) return false;
 	if (!check_empty_field('postcode', "Please enter your Postal index.")) return false;
 	if (!check_empty_field('password', " Please enter your password.")) return false;
 	if (!check_empty_field('password_align', " Please enter your password.")) return false;
 	if (!check_empty_field('email', "Please enter your e-mail address.")) return false;
 	if (!check_empty_field('phone', "Please enter your phone number.")) return false;
 /*	if (!check_empty_field('passport_seria', "Please enter your passport serial.")) return false;
 	if (!check_empty_field('passport_number', "Please enter your passport number.")) return false;
 	if (!check_empty_field('passport_location', "Please enter the number of your passport issue district.")) return false; 	*/
 	if (!check_empty_field('postcode', "Please enter your Postal index.")) return false; 	
 	
 	if (!check_latin_letter('name', "The entered name is incorrect. It must be typed in Latin letters and must contain less than 64 characters.", '63')) return false;
/*	if (!check_latin_letter('organization', "The name of your organization must be typed in Latin letters and must contain less than 64 characters., '63')) return false;	*/
	if (!check_latin_letter('street', "The entered street name is incorrect. It must be typed in Latin letters and must contain less than 64 characters.", '63')) return false;
 	if (!check_latin_letter('city', "The entered city is incorrect. It must be typed in Latin and must contain less than 64 characters.", '63')) return false;
 	if (!check_latin_letter('postcode', "The entered postal index is incorrect. It must be typed in Latin letters and must contain less than 64 characters.", "10")) return false;
 	

 	
 	if (document.getElementById('password').value != document.getElementById('password_align').value) {
	 	alert(" The entered passwords do not match.");
	 	return(false); 		
 	}

	var re_phone = /^([0-9,+() s-]{5,23})$/; 
	var re_pasport_number = /^([0-9A-Za-z]{5,20})$/;
	var re_pasport_seria = /^([A-Za-z0-9]{2})$/;
	var re_pasport_location = /^([0-9]{3})$/;
	
	
// E-Mail

 	 txtemail=document.userform.email.value;
	 if (txtemail.indexOf(".") == -1) { 
	 	alert("The entered e-mail address is incorrect."); 
	 	return(false);
	 }
	 
	 dog = txtemail.indexOf("@"); 
	 if (dog == -1) { 
	 	alert("The entered e-mail address is incorrect."); 
	 	return(false);
	 } 
	 
	 if ((dog < 1) || (dog > txtemail.length - 5)) { 
	 	alert("The entered e-mail address is incorrect.");
	 	return(false);
	 } 
	 
	 if ((txtemail.charAt(dog - 1) == '.') || (txtemail.charAt(dog + 1) == '.')) { 
	 	alert("The entered e-mail address is incorrect.");
	 	return(false);
	 } 

// Phone
 	 txtphone=document.userform.phone.value; 	 
 	 
	 if(!txtphone.match(re_phone)) {
	 	alert("The entered phone number is incorrect.");
		return(false);
	}
	
	
// fax

 	 txtfax=document.userform.fax.value;
 	 
	 if(texttrim(txtfax) && !txtfax.match(re_phone)) {
	 	alert("The entered Fax number is incorrect.");
		return(false);
	}

}