var add_result;

function get_directions() {
	var pop = document.getElementById('grade_select').options.length;
	var selected_value;
	
	for(i=0; i<pop; i++) {
		if(document.getElementById('grade_select').options[i].selected==true) {
			selected_value = document.getElementById('grade_select').options[i].value;	
		}
	}
	
	$.ajax({
	   type: "GET",
	   url: "get_directions.php",
	   data: "id="+selected_value,
	   success: function(responce){
			var root = responce.documentElement;
			var msg = root.childNodes[0].childNodes[0].nodeValue;
			var direction_select = document.getElementById('direction_select');
			var cource_select = document.getElementById('cource_select');
			
			if(msg=="void") {
				direction_select.innerHTML='<option value="0">Κατεύθυνση</option>';
				cource_select.innerHTML='<option value="0">Μάθημα</option>';
			} else {
				var root = responce.documentElement;
				var insiders = root.getElementsByTagName("r");
				
				direction_select.innerHTML='<option value="0">Κατεύθυνση</option>';
				for(i=0; i<insiders.length; i++) {
					var the_id = insiders[i].getAttribute('the_id');
					var the_name = insiders[i].childNodes[0].nodeValue;
					direction_select.add(new Option(the_name, the_id),  null);
				}
			}
	   }
	 });
}

function get_cources() {
	var pop = document.getElementById('grade_select').options.length;
	var selected_value_grade;
	
	for(i=0; i<pop; i++) {
		if(document.getElementById('grade_select').options[i].selected==true) {
			selected_value_grade = document.getElementById('grade_select').options[i].value;	
		}
	}
	
	var pop_direction = document.getElementById('direction_select').options.length;
	var selected_value_direction;
	
	for(i=0; i<pop_direction; i++) {
		if(document.getElementById('direction_select').options[i].selected==true) {
			selected_value_direction = document.getElementById('direction_select').options[i].value;	
		}
	}
	
	$.ajax({
	   type: "GET",
	   url: "get_cources.php",
	   data: "grade_id="+selected_value_grade+"&direction_id="+selected_value_direction,
	   success: function(responce){
			var root = responce.documentElement;
			var msg = root.childNodes[0].childNodes[0].nodeValue;
			var cource_select = document.getElementById('cource_select');
			
			if(msg=="void") {
				cource_select.innerHTML='<option value="0">Μάθημα</option>';
			} else {
				var root = responce.documentElement;
				var insiders = root.getElementsByTagName("r");
				
				cource_select.innerHTML='<option value="0">Μάθημα</option>';
				for(i=0; i<insiders.length; i++) {
					var the_id = insiders[i].getAttribute('the_id');
					var the_name = insiders[i].childNodes[0].nodeValue;
					cource_select.add(new Option(the_name, the_id),  null);
				}
			}
	   }
	 });
}

function get_old_papers() {
	var pop = document.getElementById('grade_select').options.length;
	var selected_value_grade;
	
	for(i=0; i<pop; i++) {
		if(document.getElementById('grade_select').options[i].selected==true) {
			selected_value_grade = document.getElementById('grade_select').options[i].value;	
		}
	}
	
	var pop_direction = document.getElementById('direction_select').options.length;
	var selected_value_direction;
	
	for(i=0; i<pop_direction; i++) {
		if(document.getElementById('direction_select').options[i].selected==true) {
			selected_value_direction = document.getElementById('direction_select').options[i].value;	
		}
	}
	
	var pop_cource = document.getElementById('cource_select').options.length;
	var selected_value_cource;
	
	for(i=0; i<pop_cource; i++) {
		if(document.getElementById('cource_select').options[i].selected==true) {
			selected_value_cource = document.getElementById('cource_select').options[i].value;
		}
	}
	
	window.location.href="?q=old_papers&grade_id="+selected_value_grade+"&direction_id="+selected_value_direction+"&cource_id="+selected_value_cource;
}

function get_recommended_excercises() {
	var pop = document.getElementById('grade_select_r').options.length;
	var selected_value_grade;
	
	for(i=0; i<pop; i++) {
		if(document.getElementById('grade_select_r').options[i].selected==true) {
			selected_value_grade = document.getElementById('grade_select_r').options[i].value;	
		}
	}
	
	var pop_direction = document.getElementById('direction_select_r').options.length;
	var selected_value_direction;
	
	for(i=0; i<pop_direction; i++) {
		if(document.getElementById('direction_select_r').options[i].selected==true) {
			selected_value_direction = document.getElementById('direction_select_r').options[i].value;	
		}
	}
	
	var pop_cource = document.getElementById('cource_select_r').options.length;
	var selected_value_cource;
	
	for(i=0; i<pop_cource; i++) {
		if(document.getElementById('cource_select_r').options[i].selected==true) {
			selected_value_cource = document.getElementById('cource_select_r').options[i].value;
		}
	}
	
	window.location.href="?q=recommended_exe_results&grade_id="+selected_value_grade+"&direction_id="+selected_value_direction+"&cource_id="+selected_value_cource;
}

function get_directions_r() {
	var pop = document.getElementById('grade_select_r').options.length;
	var selected_value;
	
	for(i=0; i<pop; i++) {
		if(document.getElementById('grade_select_r').options[i].selected==true) {
			selected_value = document.getElementById('grade_select_r').options[i].value;	
		}
	}
	
	$.ajax({
	   type: "GET",
	   url: "get_directions.php",
	   data: "id="+selected_value,
	   success: function(responce){
			var root = responce.documentElement;
			var msg = root.childNodes[0].childNodes[0].nodeValue;
			var direction_select_r = document.getElementById('direction_select_r');
			var cource_select_r = document.getElementById('cource_select_r');
			
			if(msg=="void") {
				direction_select_r.innerHTML='<option value="0">Κατεύθυνση</option>';
				cource_select_r.innerHTML='<option value="0">Μάθημα</option>';
			} else {
				var root = responce.documentElement;
				var insiders = root.getElementsByTagName("r");
				
				direction_select_r.innerHTML='<option value="0">Κατεύθυνση</option>';
				for(i=0; i<insiders.length; i++) {
					var the_id = insiders[i].getAttribute('the_id');
					var the_name = insiders[i].childNodes[0].nodeValue;
					direction_select_r.add(new Option(the_name, the_id),  null);
				}
			}
	   }
	 });
}

function get_cources_r() {
	var pop = document.getElementById('grade_select_r').options.length;
	var selected_value_grade;
	
	for(i=0; i<pop; i++) {
		if(document.getElementById('grade_select_r').options[i].selected==true) {
			selected_value_grade = document.getElementById('grade_select_r').options[i].value;	
		}
	}
	
	var pop_direction = document.getElementById('direction_select_r').options.length;
	var selected_value_direction;
	
	for(i=0; i<pop_direction; i++) {
		if(document.getElementById('direction_select_r').options[i].selected==true) {
			selected_value_direction = document.getElementById('direction_select_r').options[i].value;	
		}
	}
	
	$.ajax({
	   type: "GET",
	   url: "get_cources.php",
	   data: "grade_id="+selected_value_grade+"&direction_id="+selected_value_direction,
	   success: function(responce){
			var root = responce.documentElement;
			var msg = root.childNodes[0].childNodes[0].nodeValue;
			var cource_select_r = document.getElementById('cource_select_r');
			
			if(msg=="void") {
				cource_select_r.innerHTML='<option value="0">Μάθημα</option>';
			} else {
				var root = responce.documentElement;
				var insiders = root.getElementsByTagName("r");
				
				cource_select_r.innerHTML='<option value="0">Μάθημα</option>';
				for(i=0; i<insiders.length; i++) {
					var the_id = insiders[i].getAttribute('the_id');
					var the_name = insiders[i].childNodes[0].nodeValue;
					cource_select_r.add(new Option(the_name, the_id),  null);
				}
			}
	   }
	 });
}

function subscribe() {
	var email = document.getElementById('newsletter_input').value;
	var re = new RegExp("^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*\.(([0-9]{1,3})|([a-zA-Z]{2,3})|(aero|coop|info|museum|name))$");
	
	if(re.test(email)) {
		$.ajax({
		   type: "POST",
		   url: "check_if_email_exists.php",
		   data: "email="+email,
		   success: function(responce){
				var root = responce.documentElement;
			 	var msg = root.childNodes[0].nodeValue;
			 
			 	if(msg=="YES") alert('Το Email που εισαγάγατε είναι ήδη καταχωριμένο!');
				else {
					$.ajax({
					   type: "POST",
					   url: "add_email.php",
					   data: "email="+email,
					   success: function(responce){
							var root = responce.documentElement;
							var msg = root.childNodes[0].nodeValue;
							
							if(msg=="YES") {
								$("#newsletter_msg").show("slow");
							}
					   }
					 });

				}
		   }
		 });
	} else alert('Το Email που εισαγάγατε δεν έχει έγκυρη μορφή!');

}

function unsubscribe() {
	var email = document.getElementById('newsletter_input').value;
	var re = new RegExp("^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*\.(([0-9]{1,3})|([a-zA-Z]{2,3})|(aero|coop|info|museum|name))$");
	
	if(re.test(email)) {
		$.ajax({
		   type: "POST",
		   url: "check_if_email_exists.php",
		   data: "email="+email,
		   success: function(responce){
				var root = responce.documentElement;
			 	var msg = root.childNodes[0].nodeValue;
			 
			 	if(msg=="NO") alert('Το Email που εισαγάγατε δεν ήταν καταχωριμένο στη λίστα μας!');
				else {
					$.ajax({
					   type: "POST",
					   url: "remove_email.php",
					   data: "email="+email,
					   success: function(responce){
							var root = responce.documentElement;
							var msg = root.childNodes[0].nodeValue;
							
							if(msg=="YES") {
								$("#newsletter_msg_un").show("slow");
							}
					   }
					 });

				}
		   }
		 });
	} else alert('Το Email που εισαγάγατε δεν έχει έγκυρη μορφή!');
}

function clear_contact_form() {
	var answer=confirm("Είστε σίγουρος/η\;");
	
	if(answer) {
		document.getElementById('name_surname').value='';
		document.getElementById('email').value='';
		document.getElementById('subject').value='';
		document.contact_form.content.value='';
		document.getElementById('result').value='';
	}
}

function validate_contact_form() {
	var owner = document.getElementById('owner').value;
	var name = document.getElementById('name_surname').value;
	var email = document.getElementById('email').value;
	var subject = document.getElementById('subject').value;
	var content = document.contact_form.content.value;
	var summation = document.getElementById('result').value;
	
	if(email=='' || content=='' || summation=='') alert('Δεν έχετε συμπληρώσει κάποιο υποχρεωτικό πεδίο!');
	else {
		if(parseInt(summation)==add_result) {
			$.ajax({
			   type: "POST",
			   url: "do_contact.php",
			   data: "owner="+owner+"&name="+name+"&email="+email+"&subject="+subject+"&content="+content,
			   success: function(responce){
					var root = responce.documentElement;
					var msg = root.childNodes[0].nodeValue;
	
					if(msg=="YES") {
						document.getElementById('message_sent').style.display='block';
	
						document.getElementById('name_surname').value='';
						document.getElementById('email').value='';
						document.getElementById('subject').value='';
						document.contact_form.content.value='';
						document.getElementById('result').value='';
					}
			   }
			 });
		} else {
			alert('Δεν κάνατε σωστά την πρόσθεση!');	
		}
	}
}

function changBackgroundColor(flag,sel) {
	if(flag==1) {
		document.getElementById(sel).style.backgroundColor='#252525';
		document.getElementById(sel).style.color='#ec008c';
	}
	else {
		document.getElementById(sel).style.backgroundColor='#aaaaaa';
		document.getElementById(sel).style.color='#000000';
	}
}

function change_arrow(the_div, the_img) {
	if(document.getElementById(the_img).src=='http://www.anatoliko.edu.gr/v2/images/arrow_small_v.png') document.getElementById(the_img).src='http://www.anatoliko.edu.gr/v2/images/arrow_small_h.png';
	else if(document.getElementById(the_img).src=='http://www.anatoliko.edu.gr/v2/images/arrow_small_h.png') document.getElementById(the_img).src='http://www.anatoliko.edu.gr/v2/images/arrow_small_v.png';
}

function generateCaptcha() {
	var span1 = document.getElementById('prosthetis');
	var span2 = document.getElementById('prostheteos');
	
	var num1 = Math.round(Math.random()*10);
	var num2 = Math.round(Math.random()*10);
	
	span1.innerHTML = num1;
	span2.innerHTML = num2;
	
	add_result = num1+num2;
}

function change_teaser() {
	$('#banner_text').fadeOut("slow");
	get_teaser();
}

function get_teaser() {
	$.ajax({
	type: "GET",
	url: "get_teaser.php",
	success: function(responce){
		var root = responce.documentElement;
		var msg = root.childNodes[0].childNodes[0].nodeValue;
		
		document.getElementById('banner_text').innerHTML = msg;
		$('#banner_text').fadeIn("slow");
		
		setTimeout("change_teaser()",10000);
	}
	});
}

function popVideoUp(hs){
	alert(document.getElementById('tv_spot_').value);
	//hs.htmlExpand(document.getElementById('tv_spot_'), { objectType: 'iframe',width: 430, height: 390,headingText: 'Διαφημιστικό Spot 2008-09' } );
}