var modified=0;

function tableEvenRows(tableID, start, lessMax, className) {
	var tab = document.getElementById(tableID);
	if(tab) {
		var rows = tab.rows;
		var evenRow=1;
		for(i=start;i<rows.length-lessMax;i++) {
			evenRow^=1;
			if(evenRow) {
				row = rows[i];
				row.className=className;
			} else {
				row = rows[i];
				row.className="";
			}
		}
	}
}

function setModified() {
	if(modified==0) {
		modified=1;
		document.title = document.title+" * (Modified)";
		box = document.getElementById("modifiedBox");
		if(box) {
			box.style.backgroundColor="brown";
			box.style.fontWeight="900";
			box.style.fontSize="8pt";
			box.style.padding="3px";
			box.innerHTML="";
		}
		box2 = document.getElementById("modifiedBox2");
		if(box2) {
			box2.style.backgroundColor="brown";
			box2.style.fontWeight="900";
			box2.style.fontSize="8pt";
			box2.style.padding="3px";
			box2.innerHTML="";
		}
	}
}

function isModified() {
	return modified;
}

function checkPageModified() {
	if(modified) {
		return confirm("You have made changes to this page. Click OK to continue without saving or Cancel to return to this page so you can save your changes.\n\nNote: If you click OK you will lose any changes you have made to this page.");
	} else {
		return true;
	}
}

function createMapQuestURL(field,address,city,province,postal) {
	if(trim(address)=="") {
		alert("Address needed for map to work properly.");
		return false;
	}

	if(trim(city)=="") {
		alert("City needed for map to work properly.");
		return false;
	}

	if(trim(province)=="") {
		alert("Province needed for map to work properly.");
		return false;
	}

	var country = "CA";

	switch(province) {
		case 'AB':
			country = "CA";
		break;
		case 'BC':
			country = "CA";
		break;
		case 'MB':
			country = "CA";
		break;
		case 'NB':
			country = "CA";
		break;
		case 'NL':
			country = "CA";
		break;
		case 'NT':
			country = "CA";
		break;
		case 'NS':
			country = "CA";
		break;
		case 'NU':
			country = "CA";
		break;
		case 'PE':
			country = "CA";
		break;
		case 'SK':
			country = "CA";
		break;
		case 'ON':
			country = "CA";
		break;
		case 'QC':
			country = "CA";
		break;
		case 'YT':
			country = "CA";
		break;
		default:
			country = "US";
		break;
	}

	var link = 'http://www.mapquest.com/maps/map.adp?formtype=address&country='+country+'&address='+address+'&city='+city+'&state='+province+'&zip='+postal;
	document.getElementById(field).value=link;
	return false;
}

function createGoogleMapURL(field,address,city,province,postal) {
	if(trim(address)=="") {
		alert("Address needed for map to work properly.");
		return false;
	}

	if(trim(city)=="") {
		alert("City needed for map to work properly.");
		return false;
	}

	if(trim(province)=="") {
		alert("Province needed for map to work properly.");
		return false;
	}

	var link = 'http://maps.google.ca/maps?f=q&hl=en&z=11&q='+address+','+city+','+province+','+postal.substr(0,3);
	document.getElementById(field).value=link;
	return false;
}

function openRemoteURL(field1,field2) {
	var url = document.getElementById(field1).value;
	if(url=="") {
		alert("No MAP URL exists.");
		return false;
	}

	var test = document.getElementById(field2);
	test.href=url;
	return true;
}

function confirmDeleteSite() {
	return(confirm("Are you sure you wish to delete this site?\n\nPlease note that if the site is being pointed to by course data deletion will not be possible. Your best course of action at this point is to just set it to in-active so it no longer shows in drop down lists."));
}

function checkModified(editorInstance) {
	if(editorInstance.IsDirty())
		setModified();
}

function trim(stringToTrim) {
	return stringToTrim.replace(/^\s+|\s+$/g,"");
}
function ltrim(stringToTrim) {
	return stringToTrim.replace(/^\s+/,"");
}
function rtrim(stringToTrim) {
	return stringToTrim.replace(/\s+$/,"");
}

function iterate_markers($markers) {
	for(var i=0;i<markers.length;i++) {
		element = document.getElementById(markers[i]);
		if(element) {
			element.className="missing_field_element";
			label = document.getElementById(markers[i]+'_label');
			if(label) {
				label.innerHTML="*";
			}
		}
	}
}

function focus_first_field(field) {
	// focus error field
	element = document.getElementById(field);
	if(element) {
		element.focus();
		try { element.select(); } catch(e) {}
	}
	return false;
}

function popupWin( bOverwrite, width, height, sTitle, sBody, iTimeout )
{
	sHead = "<html>\n<head>\n<title>" + sTitle + "</title>\n</head>\n<body>\n";

	windowFeatures ="menubar=no,scrollbars=no,location=no,favorites=no,resizable=no,status=no,toolbar=no,directories=no";

	var test = "'";
	winLeft = (screen.width-width)/2;
	winTop = (screen.height-(height+110))/2;
	newWindow = open( '', 'newWin',"width=" + width +",height=" + height + ",left=" + winLeft + ",top=" + winTop + test + windowFeatures + test);


	if( bOverwrite != false )
	{
		newWindow.document.close();
		newWindow.document.open();
	}

	newWindow.document.write( sHead );
	newWindow.document.write( sBody );
	if( iTimeout > 0 )
	{
		setTimeout( 'closeWin( newWindow )', iTimeout ); // delay x seconds before closing
	}
}

function closeWin( objWindow )
{
	objWindow.close(); // close this window, like from a timed period (as timed events are seperate from their calling functions, and persist)
}

function date_detail_popup(classID) {
	popup = window.open('https://coned.ycdsb.ca/date_detail_popup.php?classID='+classID, 'date_popup', 'width=700,height=500,menubar=no,scrollbars=yes,location=no,favorites=no,resizable=yes,status=no,toolbar=no,directories=no');
}

function class_settings_popup(id) {
	popup = window.open('https://coned.ycdsb.ca/admin/class_settings_popup.php?id='+id, 'settings_popup', 'width=800,height=600,menubar=no,scrollbars=yes,location=no,favorites=no,resizable=yes,status=no,toolbar=no,directories=no');
	popup.moveTo(0,0);
}

function course_detail_popup(id) {
	popup = window.open('https://coned.ycdsb.ca/admin/course_detail_popup.php?id='+id, 'course_detail_popup', 'width=600,height=400,menubar=no,scrollbars=yes,location=no,favorites=no,resizable=yes,status=no,toolbar=no,directories=no');
}

function session_list_popup(course_code, active_school_year) {
	if(course_code=="" || active_school_year=="") {
		alert("Please make certain that you are on a valid class and also that the Active School year below is set to a valid value.");
		return false;
	}

	popup = window.open('https://coned.ycdsb.ca/admin/session_list_popup.php?course_code='+course_code+'&active_school_year='+active_school_year, 'session_list_popup', 'width=700,height=550,menubar=no,scrollbars=yes,location=no,favorites=no,resizable=yes,status=no,toolbar=no,directories=no');
	return false;
}

function removeEditor(id, editor) {
    var editedValue = editor.getData();

    document.getElementById('antidivcontents'+id).innerHTML = editedValue;
    document.getElementById( 'div'+id ).style.display = 'none';
    document.getElementById( 'antidiv'+id ).style.display = 'inline';
}

function createEditor(id) {
    document.getElementById( 'div'+id ).style.display = 'inline';
    document.getElementById( 'antidiv'+id ).style.display = 'none';
}