var http_request = false;
function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      
      http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
}

function alertContents() {
  if (http_request.readyState == 4) {
	 if (http_request.status == 200) {
		//alert(http_request.responseText);
		result = http_request.responseText;
		document.getElementById('myspan').innerHTML = result;    
	 } else {
		document.getElementById('myspan').innerHTML = 'There was a problem with the request.';
		document.getElementById('box_form').style.display = "block";
	 }
  }
}
   
function get(obj) {
      var poststr = "shop_id=" + encodeURI( document.getElementById("shop_id").value ) +
                    "&name=" + encodeURI( document.getElementById("name").value ) +
					"&address=" + encodeURI( document.getElementById("address").value ) +
					"&phone=" + encodeURI( document.getElementById("phone").value ) +
					"&email=" + encodeURI( document.getElementById("email").value ) +
					"&message=" + encodeURI( document.getElementById("message").value ) +
					"&verifycode=" + encodeURI( document.getElementById("verifycode").value +
					"&submit=1" );
      makePOSTRequest('contact_shop.php', poststr);
}

function check_contact_form(){
	check_email();
	check_name();
	check_phone();
	check_message();
	check_code();
	if ( check_email() && check_name() && check_phone() && check_message() && check_code() ){
		document.getElementById('box_form').style.display = "none";
		document.getElementById('myspan').innerHTML = '<div align="center"><img src="http://www.wedding-guide.gr/images/loading.gif" align="absmiddle" hspace="5" /> Παρακαλώ περιμένετε</div>';
		get(document.getElementById('contact_form'));
	}
}

function check_email(){
	var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
	if (!filter.test(document.getElementById("email").value)){
		document.getElementById("email-status").innerHTML = '<br /><img src="http://www.wedding-guide.gr/images/icons/error.png" align="absmiddle" hspace="5" /><font color="red"><b>Λάθος τυπος email<b></font>';
		return false;
	}
	document.getElementById("email-status").innerHTML = '<img src="http://www.wedding-guide.gr/images/icons/ok.png" hspace="5" />';
	return true;
}

function check_name(){
	if ( document.getElementById("name").value == ''){
		document.getElementById("name-status").innerHTML = '<br /><img src="http://www.wedding-guide.gr/images/icons/error.png" align="absmiddle" hspace="5" /><font color="red"><b>Συμπληρώστε το όνομά σας<b></font>';
		return false;
	}
	document.getElementById("name-status").innerHTML = '<img src="http://www.wedding-guide.gr/images/icons/ok.png" hspace="5" />';
	return true;
}
function check_phone(){
	if ( document.getElementById("phone").value == ''){
		document.getElementById("phone-status").innerHTML = '<br /><img src="http://www.wedding-guide.gr/images/icons/error.png" align="absmiddle" hspace="5" /><font color="red"><b>Συμπληρώστε ένα τηλ. επικοινωνίας<b></font>';
		return false;
	}

	var anum=/(^\d+$)|(^\d+\.\d+$)/
	if (!anum.test(document.getElementById("phone").value)){
		document.getElementById("phone-status").innerHTML = '<br /><img src="http://www.wedding-guide.gr/images/icons/error.png" align="absmiddle" hspace="5" /><font color="red"><b>Στο τηλέφωνο επιτρέπονται μόνο αριθμοί<b></font>';
		return false;
	}
	document.getElementById("phone-status").innerHTML = '<img src="http://www.wedding-guide.gr/images/icons/ok.png" hspace="5" />';
	return true;
}
function check_code(){
	if ( document.getElementById("verifycode").value == ''){
		document.getElementById("code-status").innerHTML = '<br /><img src="http://www.wedding-guide.gr/images/icons/error.png" align="absmiddle" hspace="5" /><font color="red"><b>Συμπληρώστε των κωδικό επιβεβαίωσης<b></font>';
		return false;
	}
	document.getElementById("code-status").innerHTML = '<img src="http://www.wedding-guide.gr/images/icons/ok.png" hspace="5" />';
	return true;
}
function check_message(){
	if ( document.getElementById("message").value == ''){
		document.getElementById("message-status").innerHTML = '<br /><img src="http://www.wedding-guide.gr/images/icons/error.png" align="absmiddle" hspace="5" /><font color="red"><b>Συμπληρώστε ένα μήνυμα<b></font>';
		return false;
	}
	document.getElementById("message-status").innerHTML = '<img src="http://www.wedding-guide.gr/images/icons/ok.png" hspace="5" />';
	return true;
}