// JavaScript Document
function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}
	
// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

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++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone)
{
	s=stripCharsInBag(strPhone,validWorldPhoneChars);
	return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function ValidatePhone (){
	
	var phoneID=document.meterread.phone
	
	if ((phoneID.value==null)||(phoneID.value=="")){
		alert("Please Enter your phone number")
		phoneID.focus()
		return false
	}
	/*if (echeck(phoneID.value)==false){
		phoneID.value=""
		phoneID.focus()
		return false
	}*/
	return true
}

function ValidateReading(){
	
	var readingID=document.meterread.reading
	
	if ((readingID.value==null)||(readingID.value=="")){
		alert("Please Enter your meter reading")
		readingID.focus()
		return false
	}
	/*if (echeck(phoneID.value)==false){
		readingID.value=""
		readingID.focus()
		return false
	}*/
	return true
}

function ValidateName(){
	
	var nameID=document.meterread.name
	
	if ((nameID.value==null)||(nameID.value=="")){
		alert("Please Enter your name")
		nameID.focus()
		return false
	}
	/*if (echeck(nameID.value)==false){
		nameID.value=""
		nameID.focus()
		return false
	}*/
	return true	
}

function ValidateAddress(){
	
	var addressID=document.meterread.address
	
	if ((addressID.value==null)||(addressID.value=="")){
		alert("Please Enter the site address")
		addressID.focus()
		return false
	}
	/*if (echeck(nameID.value)==false){
		addressID.value=""
		addressID.focus()
		return false
	}*/
	return true	
}

function ValidateEmptyValues()
{

		
}
function IsAuthorized()
{
	if(typeof document.getElementById('P_Authorization') != 'undefined')
	{
		if (document.form1.P_Authorization.checked == false)
		{
			alert ("You must read and agree with our Ahorization statement.")
			return false
		}
		
		return true
	}
	
}

function ValidateForm(){

	
	if(typeof document.getElementById('name') != 'undefined')
	{
			
			if (ValidateName()==false)
			{
				return false
			}
	}


	if(typeof document.getElementById('address') != 'undefined')
	{
			
			if (ValidateAddress()==false)
			{
				return false
			}
	}
	
	if(typeof document.getElementById('phone') != 'undefined')
	{
			
			if (ValidatePhone()==false)
			{	
				return false
			}
	}
	
	if(typeof document.getElementById('reading') != 'undefined')
	{
			
			if (ValidateReading()==false)
			{
				return false
			}
	}
	

	alert ("All information has been collected, and submitted. Thank You!")
	 
	return true
}