//BROWSER DETECTION
var ns4 = document.layers;
var ns6 = document.getElementById && !document.all;
var ie4 = document.all;
 
function DetectBrowser(){ //Detectarea browserului folosit
	this.ver=navigator.appVersion
	this.agent=navigator.userAgent
	this.dom=document.getElementById?1:0
	this.opera5=(navigator.userAgent.indexOf("Opera")>-1 && document.getElementById)?1:0
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0; 
	this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
	this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
	this.ie=this.ie4||this.ie5||this.ie6
	this.mac=this.agent.indexOf("Mac")>-1
	this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
	this.ns4=(document.layers && !this.dom)?1:0;
	this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5)
	return this
}
var bw=new DetectBrowser();

//FIELDS
function imgField(field, img){
	//bgcolor
		if(img == "over"){
			//bgcolor = "#FFFFFF";
			border_color = "#00AFF0";
		}else {
			//bgcolor = "#FFFBFF";
			border_color = "#E0E1E0";
		}
		field.style.borderColor = border_color;
		//field.style.backgroundColor = bgcolor;
}

function imgField2(field, img){
	//bgcolor
		if(img == "over") bgcolor = "#FAFAFA";
					 else bgcolor = "#FFFFFF";
		field.style.backgroundColor = bgcolor;
		
	//border color
		if(img == "over") border_color = "#000000";
					 else border_color = "#999999";
		field.style.borderColor = border_color;
}

//BUTS
function imgBut(but, img){
	but.src = img;
}


//Reset Form
function resetForm(formName){
	if(ns6) form = eval("document.getElementById('"+formName+"')");
	else if(ns4) form = eval("document."+formName);
	else form = eval("document.all."+formName);
	form.reset();
}



function focus2(field){
	if(field.value == 0) field.value = '';
}	


function blur2(field){
	if(field.value == '') field.value = '0';
}	


function fieldValue(field_name){
	if(ns6) field = eval("document.getElementById('"+field_name+"')");
	else if(ns4) field = eval("document."+field_name);
	else field = eval("document.all."+field_name);
	return field.value;
}

function setFieldValue(field_name, val){
	if(ns6) field = eval("document.getElementById('"+field_name+"')");
	else if(ns4) field = eval("document."+field_name);
	else field = eval("document.all."+field_name);
	return field.value;
	field.value = val;
}

function writeIn(field_name, val){
	if(ns6) field = eval("document.getElementById('"+field_name+"')");
	else if(ns4) field = eval("document."+field_name);
	else field = eval("document.all."+field_name);
	field.innerHTML = val;
}



function formatNR(nr, dec)
{
str = "" + Math.round(eval(nr) * Math.pow(10,dec));
while(str.length < dec)
	str = "0" + str;
decidx = str.length - dec;
tmp = str.substring(0,decidx);
if(tmp == '')
	tmp = '0';
if(dec > 0)
	tmp = tmp + '.' + str.substring(decidx, str.length);
return(tmp);
}



function getkey(e)
{
if (window.event)
   return window.event.keyCode;
else if (e)
   return e.which;
else
   return null;
}


function goodchars(e, goods)
{
var key, keychar;
key = getkey(e);
if (key == null) return true;

// get character
keychar = String.fromCharCode(key);
keychar = keychar.toLowerCase();
goods = goods.toLowerCase();

// check goodkeys
if (goods.indexOf(keychar) != -1)
	return true;

// control keys
if ( key==null || key==0 || key==8 || key==9 || key==13 || key==27 )
   return true;

// else return false
return false;
}



function getSelectedRadio(buttonGroup) {
   // returns the array number of the selected radio button or -1 if no button is selected
   if (buttonGroup[0]) { // if the button group is an array (one button is not an array)
      for (var i=0; i<buttonGroup.length; i++) {
         if (buttonGroup[i].checked) {
            return i
         }
      }
   } else {
      if (buttonGroup.checked) { return 0; } // if the one button is checked, return zero
   }
   // if we get to this point, no radio button is selected
   return -1;
} // Ends the "getSelectedRadio" function

function getSelectedRadioValue(buttonGroup) {
   // returns the value of the selected radio button or "" if no button is selected
   var i = getSelectedRadio(buttonGroup);
   if (i == -1) {
      return "";
   } else {
      if (buttonGroup[i]) { // Make sure the button group is an array (not just one button)
         return buttonGroup[i].value;
      } else { // The button group is just the one button, and it is checked
         return buttonGroup.value;
      }
   }
} // Ends the "getSelectedRadioValue" function

function getSelectedCheckbox(buttonGroup) {
   // Go through all the check boxes. return an array of all the ones
   // that are selected (their position numbers). if no boxes were checked,
   // returned array will be empty (length will be zero)
   var retArr = new Array();
   var lastElement = 0;
   if (buttonGroup[0]) { // if the button group is an array (one check box is not an array)
      for (var i=0; i<buttonGroup.length; i++) {
         if (buttonGroup[i].checked) {
            retArr.length = lastElement;
            retArr[lastElement] = i;
            lastElement++;
         }
      }
   } else { // There is only one check box (it's not an array)
      if (buttonGroup.checked) { // if the one check box is checked
         retArr.length = lastElement;
         retArr[lastElement] = 0; // return zero as the only array value
      }
   }
   return retArr;
} // Ends the "getSelectedCheckbox" function

function getSelectedCheckboxValue(buttonGroup) {
   // return an array of values selected in the check box group. if no boxes
   // were checked, returned array will be empty (length will be zero)
   var retArr = new Array(); // set up empty array for the return values
   var selectedItems = getSelectedCheckbox(buttonGroup);
   if (selectedItems.length != 0) { // if there was something selected
      retArr.length = selectedItems.length;
      for (var i=0; i<selectedItems.length; i++) {
         if (buttonGroup[selectedItems[i]]) { // Make sure it's an array
            retArr[i] = buttonGroup[selectedItems[i]].value;
         } else { // It's not an array (there's just one check box and it's selected)
            retArr[i] = buttonGroup.value;// return that value
         }
      }
   }
   return retArr;
} // Ends the "getSelectedCheckBoxValue" function
  

//Email Validation
function emailValid(email)
{
  var result = false
  var theStr = new String(email)
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

function formSubmit(form, act){
	document.forms[form].action = act;
	document.forms[form].submit();
}

function fieldOb(field_name){
	if(ns6) field = eval("document.getElementById('"+field_name+"')");
	else if(ns4) field = eval("document."+field_name);
	else field = eval("document.all."+field_name);
	return field;
}

function changeRowColor(row, color){
	rOb = fieldOb(row);
	rOb.bgColor = color;  
}

//Validates a field
function ValidateField(elem, name){
	if((elem.value == ''))	{ // ||(elem.value == 0)
    		alert('Warning: Not all mandatory fields (*) have been filled!');
    		elem.focus();
   	 		return(false);
   	}
	else if(name.indexOf('Email') != -1){
			 	if(!emailValid(elem.value)){
					alert('Invalid E-mail address !');
					elem.focus();
   	 				return(false);
				}
	}
	return(true);
}

//Just Validates a field without (alert & focus)
function JustValidateField(elem){
	if((elem.value == '')||(elem.value == 0))	return(false);
	else if(name.indexOf('Email') != -1){
			 	if(!emailValid(elem.value)){
   	 				return(false);
				}
	}
	return(true);
}


//Validate form for Mandatory fields to be filled properly
function Validate(form, fields){
   	mandatory_fields = fields.split(',');
	for(i=0; i<mandatory_fields.length; i++){
		
		if(mandatory_fields[i].indexOf('|')){
			//groupped fields (at least one of them must be filled/selected)
			mandatory_group_fields = mandatory_fields[i].split('|');
			valid = 0;
			for(j=0; j<mandatory_group_fields.length; j++){
				elem = eval('form.' + mandatory_group_fields[j]);
				if(ValidateField(elem, mandatory_group_fields[j]) ) valid = 1;
				else return(false);
			}
			if(!valid){
				//no fields filled
				elem = eval('form.' + mandatory_group_fields[0]);
				if(!ValidateField(elem, mandatory_group_fields[0])) return(false);
			}
			
		}else{
			//single field
			elem = eval('form.' + mandatory_fields[i]);
			if(!ValidateField(elem, mandatory_fields[i])) return(false);
		}
		
	}//for
	return(true);
}

//Login Form Check
function checkLogin(form){
   	if(form.login_user.value == '')	{
    		alert('Insert Username');
    		form.login_user.focus();
   	 	return(false);
   	}
   	if(form.login_pass.value == '')	{
    		alert('Insert Password');
    		form.login_pass.focus();
   	 	return(false);
   	}
	return(true);
}

function checkFormPass(form){
   	if(form.old_pass.value == '')	{
    		alert('Enter current password!');
    		form.old_pass.focus();
   	 	return(false);
   	}
	
   	if(form.new_pass.value == '')	{
    		alert('Enter new password!');
    		form.new_pass.focus();
   	 	return(false);
   	}
	
   	if(form.new_pass2.value == '')	{
    		alert('Re-enter new password!');
    		form.new_pass2.focus();
   	 	return(false);
   	}
	
   	if(form.new_pass.value != form.new_pass2.value)	{
    		alert('Error! You have re-entered a different new password!');
    		form.new_pass.focus();
   	 	return(false);
   	}

	return(true);
}

function DeselectLists(ck){
	if(getSelectedCheckboxValue(ck) == 1){
		//grades
		CONTROL = eval('document.formAdd.elements[15]');	
		for(var i = 0;i < CONTROL.length;i++) CONTROL.options[i].selected = false;
		//teachers
		CONTROL = eval('document.formAdd.elements[16]');	
		for(var i = 0;i < CONTROL.length;i++) CONTROL.options[i].selected = false;
		//students
		CONTROL = eval('document.formAdd.elements[18]');	
		for(var i = 0;i < CONTROL.length;i++) CONTROL.options[i].selected = false;
	}
}

function SelectList(){
	sel = 0;
	//grades
	CONTROL = eval('document.formAdd.elements[15]');	
	for(var i = 0;i < CONTROL.length;i++) 
		if(CONTROL.options[i].selected == true) sel = 1;
	//teachers
	CONTROL = eval('document.formAdd.elements[16]');	
	for(var i = 0;i < CONTROL.length;i++) 
		if(CONTROL.options[i].selected == true) sel = 1;
	//students
	CONTROL = eval('document.formAdd.elements[18]');	
	for(var i = 0;i < CONTROL.length;i++) 
		if(CONTROL.options[i].selected == true) sel = 1;
		
	ck = eval('document.formAdd.entire_school');
	if(sel)	ck.checked = false;
	else	ck.checked = true;
}


function SelectPeopleList(nr){
	CONTROL = eval('document.forms["formMail"].elements['+nr+']');	
	for(var i = 0;i < CONTROL.length;i++){
		CONTROL.options[i].selected = true;
	}
}

function DeselectPeopleList(nr){
	CONTROL = eval('document.forms["formMail"].elements['+nr+']');	
	for(var i = 0;i < CONTROL.length;i++){
		CONTROL.options[i].selected = false;
	}
}

function AddToPeopleList(nr){
	CONTROL = eval('document.forms["formMail"].elements['+nr+']');	
	VAL = document.forms["formMail"].email.value;
	if(VAL == '') {
		alert('Insert email address!');
		document.forms["formMail"].email.focus();
	}else if(!emailValid(VAL)) {
		alert('Invalid email address!');
		document.forms["formMail"].email.focus();
	}else{
		//verify if not already in list
		exists = 0;
		for(var i = 0;i < CONTROL.length;i++){
			if(CONTROL.options[i].value.toUpperCase() == VAL.toUpperCase()) exists = 1;
		}
		
		if(exists) alert('Email already in list!');
		else{
			var len = CONTROL.length++;
			CONTROL.options[len].value = VAL;
			CONTROL.options[len].text = VAL;
			CONTROL.options[len].selected = true;
			document.forms["formMail"].email.value = '';
			document.forms["formMail"].email.focus();
			//alert('Email added to list and selected.');
		}
	}
}


function SendMails(nr){
	if(ValidateFormMail(document.forms['formMail'], nr)) 
		document.forms['formMail'].submit();
}

function AddStudentsToList(students, nr){
	if(students != ''){
		CONTROL = eval('document.forms["formMail"].elements['+nr+']');	
		emails = students.split(',');
	
		for(i=0; i<emails.length; i++){
			VAL = emails[i];
			if(VAL != ''){

				/*
				//verify if not already in list
				exists = 0;
				for(var i = 0;i < CONTROL.length;i++){
					if(CONTROL.options[i].value.toUpperCase() == VAL.toUpperCase()) exists = 1;
				}

				if(!exists){
					*/
					var len = CONTROL.length++;
					CONTROL.options[len].value = VAL;
					CONTROL.options[len].text = VAL;
					CONTROL.options[len].selected = true;
				//}
			}
		}
	}
}

function DeselectCombos(ids){
	ids = ids.split(',');
	for(i=0; i<ids.length; i++){
		DeselectPeopleList(ids[i]);
	}
}

function RemoveStudentsFromList(nr){
	CONTROL = eval('document.forms["formMail"].elements['+nr+']');	
	CONTROL.length = 0;
}

function RemoveFromList(nr){
	CONTROL = eval('document.forms["formMail"].elements['+nr+']');	
	CONTROL.length = 0;
}

function RemoveSelectedFromList(nr){
	CONTROL = eval('document.forms["formMail"].elements['+nr+']');	
	CONTROL.length = 0;
}

function ValidateFormMail(form, nr){
	CONTROL = eval('document.forms["formMail"].elements['+nr+']');	
	ok = 0;
	for(i=0; i<CONTROL.length; i++){
		if(CONTROL.options[i].selected == true) ok = 1;
	}
	if(ok == 0) {
		alert('Error: No email address selected from the list of receivers!');
		return false;
	}else if(form.from.value == ''){
		alert('Error: From Email Address empty!');
		form.from.focus();
		return false;
	}else if(!emailValid(form.from.value)){
		alert('Error: From Email Address is invalid!');
		form.from.focus();
		return false;
	}else if(form.subject.value == ''){
		alert('Error: Mail Subject empty!');
		form.subject.focus();
		return false;
	}else if(form.msg.value == ''){
		alert('Error: Mail Message empty!');
		form.msg.focus();
		return false;
	}
	
	return true;
}