// JavaScript Document
/////////////////////////////////////////////////////////////////
function getElem(elemID){
	var obj;
	if (document.all){
		obj = document.all(elemID)
	}else if (document.getElementById){
		obj = document.getElementById(elemID)
	}else if (document.layers){
		obj = document.layers[elemID]
	}
	return obj;
}

/////////////////////////////////////////////////////////////////
function checkEmail(email){
	var regex = /^[\w\.-]+@[\w\.-]+\.[a-zA-Z]{2,4}$/ 
	if (!regex.test(email)) return false; 
	return true; 
} 	

/////////////////////////////////////////////////////////////////
function validAmount(no){
	var regex = /^[\d]+(\.[\d]{1,2})?$/;  
	if (!regex.test(no)) return false; 
	return true; 
} 	

/////////////////////////////////////////////////////////////////
function validate_login(frm){
	if (frm.pack_username.value == ""){
		alert('Username required!');
		frm.pack_username.select();
		return false;
	}else if (frm.pack_pass.value == ""){
		alert('Password required!');
		frm.pack_pass.select();
		return false;
	}
	
	return true;
}

/////////////////////////////////////////////////////////////////
function validate_edit_profile(frm){
	if (frm.first_name.value == ""){
		alert('First name required!');
		frm.first_name.focus();
		return false;
	}else if (frm.surname.value == ""){
		alert('Surname required!');
		frm.surname.focus();
		return false;
	}else if (frm.date_birth.value != "" && isDate(frm.date_birth.value) == false){
		frm.date_birth.focus();
		return false;
	}else if (frm.email.value == ""){
		alert('Email required!');
		frm.email.focus();
		return false;
	}else if (!checkEmail(frm.email.value)){
		alert('Invalid Email address!');
		frm.email.select();
		return false;
	}else if (isDate(frm.last_smoke.value) == false){
		frm.last_smoke.focus();
		return false;
	}else if (frm.amount.value == ""){
		alert('Money spent a day on smoking required!');
		frm.amount.focus();
		return false;
	}else if (!validAmount(frm.amount.value)){
		alert('Invalid amount!');
		frm.amount.select();
		return false;
	}else if (frm.photo.value!="" && frm.photo.value.toLowerCase().indexOf('.jpg')==-1 && frm.photo.value.toLowerCase().indexOf('.jpeg')==-1){
		alert("The photo must have .jpg format!");
		frm.photo.focus();
		return false;
	}
	
	return true;
}


/////////////////////////////////////////////////////////////////
function validate_sign_up(frm){
	if (frm.first_name.value == ""){
		alert('First name required!');
		frm.first_name.focus();
		return false;
	}else if (frm.surname.value == ""){
		alert('Surname required!');
		frm.surname.focus();
		return false;
	}else if (frm.username.value == ""){
		alert('Username required!');
		frm.username.focus();
		return false;
	}else if (frm.pass.value == ""){
		alert('Password required!');
		frm.pass.focus();
		return false;
	}else if (frm.repeat_pass.value == ""){
		alert('Retype password!');
		frm.repeat_pass.focus();
		return false;
	}else if (frm.repeat_pass.value != frm.pass.value){
		alert("You didn't retype the password correctly!");
		frm.pass.value = "";
		frm.repeat_pass.value = "";
		frm.pass.focus();
		return false;
	}else if (frm.email.value == ""){
		alert('Email required!');
		frm.email.focus();
		return false;
	}else if (!checkEmail(frm.email.value)){
		alert('Invalid Email address!');
		frm.email.select();
		return false;
	}else if (isDate(frm.last_smoke.value) == false){
		frm.last_smoke.focus();
		return false;
	}else if (!frm.sex[0].checked && !frm.sex[1].checked){
		alert('Gender required');
		return false;
	}else if (frm.amount.value == ""){
		alert('Money spent a day on smoking required!');
		frm.amount.focus();
		return false;
	}else if (!validAmount(frm.amount.value)){
		alert('Invalid amount!');
		frm.amount.select();
		return false;
	}else if (frm.photo.value!="" && frm.photo.value.toLowerCase().indexOf('.jpg')==-1 && frm.photo.value.toLowerCase().indexOf('.jpeg')==-1){
		alert("The photo must have .jpg format!");
		frm.photo.focus();
		return false;
	}
	
	return true;
}

/////////////////////////////////////////////////////
function validate_change_password(frm){
	if (frm.old_pass.value == ""){
		alert("Old Password required !");
		frm.old_pass.focus();
		return false;
	}else if (frm.pass.value == ""){
		alert("New Password required !");
		frm.pass.focus();
		return false;
	}else if (frm.repeat_pass.value == ""){
		alert("Retype password please!");
		frm.repeat_pass.focus();
		return false;
	}else if(frm.pass.value != frm.repeat_pass.value){
		alert("You didn't retype the password correctly!");
		frm.pass.value="";
		frm.repeat_pass.value="";
		frm.pass.focus();
		return false;
	}

	return true;
}

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

/////////////////////////////////////////////////////
function stripHTML(string){
	var re= /<\S[^>]*>/g;
	return string.replace(re,"");
} 

////////////////////////////////////////////////////
function validate_post(frm){
	return true;
	if (trim(stripHTML(frm.message.value)) == ""){
		alert("Message required!");
		frm.message.focus();
		return false;
	}
	return true;
}

////////////////////////////////////////////////////
function validate_reset(frm){
	if (isDate(frm.date_last_smoked.value) == false){
		frm.date_last_smoked.focus();
		return false;
	}
	return true;
}

////////////////////////////////////////////////////
function validate_message(frm){
	if (frm.message.value == ""){
		alert("Message required !");
		frm.message.focus();
		return false;
	}
	return true;
}

////////////////////////////////////////////////////
function validate_question(frm){
	if (frm.question.value == ""){
		alert("Question required !");
		frm.question.focus();
		return false;
	}
	return true;
}

////////////////////////////////////////////////////
function validate_message(frm){
	if (frm.message.value == ""){
		alert("Message required !");
		frm.message.focus();
		return false;
	}
	return true;
}

///////////////////////////////////////////////////////////////
function zoom_image(IDProduct){
	window.open('pop_up_image.php?IDProduct='+IDProduct,'pop_img','scrollbars=no,height=250,width=350,resizable=yes');
}

///////////////////////////////////////////////////////////////
function hideByID(ID){
	if (getElem(ID)){getElem(ID).style.display = "none";}
	else if (ID){
		d = ID.split(",");
		for (i=0,n=d.length; i<n; i++){
			if (getElem(d[i])){getElem(d[i]).style.display = "none";}
		}
	}
}

///////////////////////////////////////////////////////////////
function showByID(ID){
	if (getElem(ID)){getElem(ID).style.display = "";}
	else if (ID){
		d = ID.split(",");
		for (i=0,n=d.length; i<n; i++){
			if (getElem(d[i])){getElem(d[i]).style.display = "";}
		}
	}
}

/////////////////////////////////////////////////////////////
function open_diary_form(user_id, day){
	frame = getElem('write_diary');
	frame.src = "write_diary.php?user="+user_id+"&day="+day;
	showByID('write_diary');
}


/////////////////////////////////////////////////////////////
/**
 * DHTML date validation script for dd/mm/yyyy. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// Declaring valid date character, minimum year and maximum year
var dtCh= "-";
var minYear=1900;
var maxYear=2100;

/////////////////////////////////////////////////////////////
function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

/////////////////////////////////////////////////////////////
function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

/////////////////////////////////////////////////////////////
function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
/////////////////////////////////////////////////////////////
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

/////////////////////////////////////////////////////////////
function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : dd-mm-yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
return true
}

/////////////////////////////////////////////////////////////
function validate_event(frm){
	var dt=frm.event_date
	
	if (frm.event_title.value == ""){
		alert("Event Title required");
		frm.event_title.focus();
		return false;
	}else if (frm.area.value == ""){
		alert("Area required");
		frm.area.focus();
		return false;
	}else if (isDate(dt.value)==false){
		dt.focus();
		return false;
	}
  return true;
}

////////////////////////////////////////////////////////////
function validate_event_search(frm){
	if (frm.search.value.length < 4){
		alert ("The search word must have at least 4 chars");
		frm.search.select();
		return false;
	}
	
	return true;
}


////////////////////////////////////////////////////////////
function validate_ask_doctor(frm){
	if (frm.search.value.length < 4){
		alert ("The search question must have at least 4 chars");
		frm.search.select();
		return false;
	}
	
	return true;
}


////////////////////////////////////////////////////////////
function validate_spending(frm){
	if (frm.product.value == ""){
		alert("What did you buy?");
		frm.product.focus();
		return false;
	}else if (frm.sum.value == ""){
		alert("How much did you spend?");
		frm.sum.focus();
		return false;
	}else if (!validAmount(frm.sum.value)){
		alert("Invalid amount!");
		frm.sum.select();
		return false;
	}
	
	return true;
}

////////////////////////////////////////////////////////////
function validate_contact(frm){
	if (frm.name.value == ""){
		alert("Name required!")
		frm.name.focus();
		return false;
	}else if (frm.email.value == ""){
		alert("Email required!")
		frm.email.focus();
		return false;
	}else if (checkEmail(frm.email.value) == false){
		alert("Invalid email address!")
		frm.email.select();
		return false;
	}else if (frm.message.value == ""){
		alert("Message required!")
		frm.message.focus();
		return false;
	}
	
	return true;
}

///////////////////////////////////////////////////////////
function validate_new_user(frm){
	if (frm.first_name.value == ""){
		alert('First name required!');
		frm.first_name.focus();
		return false;
	}else if (frm.surname.value == ""){
		alert('Surname required!');
		frm.surname.focus();
		return false;
	}else if (frm.username.value == ""){
		alert('Username required!');
		frm.username.focus();
		return false;
	}else if (frm.email.value == ""){
		alert('Email required!');
		frm.email.focus();
		return false;
	}else if (!checkEmail(frm.email.value)){
		alert('Invalid Email address!');
		frm.email.select();
		return false;
	}else if (!frm.sex[0].checked && !frm.sex[1].checked){
		alert('Gender required');
		return false;
	}else if (frm.photo.value!="" && frm.photo.value.toLowerCase().indexOf('.jpg')==-1 && frm.photo.value.toLowerCase().indexOf('.jpeg')==-1){
		alert("The photo must have .jpg format!");
		frm.photo.focus();
		return false;
	}
	
	return true;
}

///////////////////////////////////////////////////////////
function play_video(frm, ID){
	frm.play_answer.value = ID;
	frm.submit();
}

///////////////////////////////////////////////////////////
function validate_mobile(frm){
	if (frm.phone.value==""){
		alert("Mobile Number required");
		frm.phone.focus();
		return false;
	}else if (!validPhoneNumber(frm.phone.value)){
		alert("Invalid Mobile Number");
		frm.phone.focus();
		return false;
	}
	
	return true;
}

/////////////////////////////////////////////////////////////////
function validPhoneNumber(no){
	var regex = /^[\d]+$/;  
	if (!regex.test(no)) return false; 
	return true; 
}