//------------------Value Checking Functions ------------------/

function isValidRadio(oElement, message){
    // set var radio_choice to false
    var radio_choice = false;

    // Loop from zero to the one minus the number of radio button selections
    for (counter = 0; counter < oElement.length; counter++)
    {
      // If a radio button has been selected it will return true
      // (If not it will return false)
      if (oElement[counter].checked)
        radio_choice = true; 
    }

    if (!radio_choice)
    {
      // If there were no selections made display an alert box 
      alert(message)
      return (false);
    }
    return (true);
}

//Validate that a checkbox is checked
function isValidRequiredCheckbox(oElement, name) {
	
	if (oElement.checked == false) {
		alert (name + " must be checked.");
		return (false);
	} else {
		return (true);
	}

}

//do not allow spaces or semicolons in input to project against sql injection errors
function isSafeValue(oElement, name) {

    var isValid = true;
    var str = Trim(oElement.value);
    for (var i=0; i<str.length; i++) {
	if ( (str.charAt(i)==" ") || (str.charAt(i)==";") ) {
		alert("The "+name+" you entered is not valid.");
		isValid = false;
    	}
    }
    return isValid;
}

function isValidCreditCard(cardNumber, cardType, fieldName)
{

  var isValid = false;
  var ccCheckRegExp = /[^\d ]/;
  isValid = !ccCheckRegExp.test(cardNumber);

  if (isValid)
  {
    var cardNumbersOnly = cardNumber.replace(/ /g,"");
    var cardNumberLength = cardNumbersOnly.length;
    var lengthIsValid = false;
    var prefixIsValid = false;
    var prefixRegExp;

    switch(cardType)
    {
     //mastercard 
     case "3":
        lengthIsValid = (cardNumberLength == 16);
        prefixRegExp = /^5[1-5]/;
        break;
	
      //visa
      case "2":
        lengthIsValid = (cardNumberLength == 16 || cardNumberLength == 13);
        prefixRegExp = /^4/;
        break;
        
	  //amex
      case "4":
        lengthIsValid = (cardNumberLength == 15);
        prefixRegExp = /^3(4|7)/;
        break;
	
      //amex
      case "5":
        lengthIsValid = (cardNumberLength == 16);
        prefixRegExp = /^(6011|65)/;
        break;
        
      default:
        prefixRegExp = /^$/;
        alert("Card type not found");
    }

    prefixIsValid = prefixRegExp.test(cardNumbersOnly);
    isValid = prefixIsValid && lengthIsValid;
  }

  if (isValid)
  {
    var numberProduct;
    var numberProductDigitIndex;
    var checkSumTotal = 0;

    for (digitCounter = cardNumberLength - 1; 
      digitCounter >= 0; 
      digitCounter--)
    {
      checkSumTotal += parseInt (cardNumbersOnly.charAt(digitCounter));
      digitCounter--;
      numberProduct = String((cardNumbersOnly.charAt(digitCounter) * 2));
      for (var productDigitCounter = 0;
        productDigitCounter < numberProduct.length; 
        productDigitCounter++)
      {
        checkSumTotal += 
          parseInt(numberProduct.charAt(productDigitCounter));
      }
    }

    isValid = (checkSumTotal % 10 == 0);
  }

  if (isValid) return true;
  else {
  	alert("The credit card number you entered is not valid. Please check the card type and number.");
  	return false;
  }

}

function isValidPhone(value,country)
{
	/*if (country=='223') var part = new RegExp("^[0-9]{10}$");
	else var part = new RegExp("^[0-9]{9-20}$");
	if (part.test(value)) return true;
	else 
	{
		alert("Please enter a valid phone number. It must be 9-20 numeric digits and may not contain any spaces, dashes, or any other characters.");
		return false;
	}*/
	return true;
}

function isValidCvv2(value,cardType) {
  
  var cvv2Length = value.length;
  var justDigits = new RegExp("^[0-9]{3,4}$");
  var lengthIsValid = false;
  
  switch(cardType)
    {
     //amex 
     case "4":
        lengthIsValid = (cvv2Length == 4);
        break;
	
      default:
        lengthIsValid = (cvv2Length == 3);
    }
  prefixIsValid = justDigits.test(value);
  isValid = prefixIsValid && lengthIsValid;
    
  if (isValid) {
    return true;
  } else {
    alert("The security code you entered is not valid.");
    return false;
  }     

}

function isValidPWVerify(pw1, pw2) {
  if ( Trim(pw1.value) != Trim(pw2.value) ) {
	  	    alert("The new admin passwords do not match.");
	  	    return false;
  } else return true; 
}

function isValidEmailAddress(value, label) {
  var reg = new RegExp("^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$");
  if (reg.test(value)) {
    return true;
  } else {
    alert("Please enter a valid " + label + ".");
		return false;
  }
}

function isValidLinkText(value) {
  if (value.length <= 20) {
    	return true;
  } else {
    	alert("The link text must be 20 characters or less.");
		return false;
  }
}

function isValidLinkURL(value) {
  var reg = new RegExp("^(http://).");
  if (reg.test(value)) {
    	return true;
  } else {
    	alert("The link URL must begin with http://");
	return false;
  }
}

function isNumber(value,label) {
  var reg = new RegExp("^[0-9]");
  if (reg.test(value)) {
    	return true;
  } else {
    	alert("Please enter a valid " + label + ". " + label + " can not be negative.");
	return false;
  }
}

function isValidFilename (file,label) {
  /*var WinFile = new RegExp("^([a-zA-Z]\:|\\)\\([^\\]+\\)*[\/0-9A-Za-z_-|]+\.(gif|jpg|jpeg|png|GIF|JPG|JPEG|PNG)$");
  var MacFile = new RegExp("^(/)*([^\/]+\/)*[\/0-9A-Za-z_-|]+\.(gif|jpg|jpeg|png|GIF|JPG|JPEG|PNG)$");
  if ( WinFile.test(file.value) || MacFile.test(file.value) ) {
  	return true;
  } else {
        alert(label + " is not valid. Filenames may not contain spaces or punctuation marks, and the file must be in gif, jpg or png format.");
        return false;
  }*/
  return true;

}

function isValidFilenameTxt (file,label) {
  var reg = new RegExp("^(.*)?[\/|\\][0-9A-Za-z_]+\.(txt|TXT)$");
  if (reg.test(file.value)) {
        return true;
  } else {
        alert(label + " is not valid. Filenames may not contain spaces or punctuation marks, and the file must be in txt format.");
        return false;
  }

}

function isValidDomain(value) {
  var reg = new RegExp("^[A-Za-z0-9]{5,25}$");
  var reg2 = new RegExp("^(help|admin|brian|margo|hq|dev|staging|rishi|jon|www)$");
  if (reg.test(value) && !reg2.test(value)) {
    return true;
  } else {
    alert("The web address must be 5-25 characters, and it may only contain letters and digits 0-9.");
                return false;
  }     

}

function isValidPaypalUsername(value, label) {
  var reg = new RegExp("^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$");
  if (reg.test(value)) { 
    return true;
  } else {
    alert("Please enter a valid " + label + ". PayPal usernames are in email format (ex. name@gmail.com).");
                return false;
  } 
}

function isValidCustomDomain(domain) 
{
  var reg = new RegExp("^(http://)?(www.)?(([a-zA-Z0-9_-]+)[\.]?)([a-zA-Z0-9_-]+)[\.]([A-Za-z0-9_-]{2,4})$");
  var reg2 = new RegExp("^(.*)(.flyingcart.com)$");
  if (reg.test(domain.value))
  {
  	if (reg2.test(domain.value)) {
		alert("If you would like to use a different Flying Cart domain, please contact us or set up a new store.");
		return false;
	} else { return true;}  
  }
  else 
  {
		alert("The domain you entered is not valid.");
		return false;
  }
}

function weightIsOver70(value) {
  if (value>70) {
	alert("USPS will not ship packages that are over 70 lbs.");
  }
}
function isValidPriceOrWeight(value, label) {
  var reg = new RegExp("^([0-9]+)?(?:\.[0-9]{0,2})?$");
  //var reg2 = new RegExp("^[0]+(.[0]+)$");	
  if (reg.test(value)) {
    	/*if (!reg2.test(value)) 
    	{
			return true;
		} 
		else 
		{
			alert(label + " must be greater than zero.");
			return false;
		}*/
    	return true;  
  } else {
    	alert("Please enter a valid " + label + ".");
	return false;
  }
}

function isValidShippingPrice(value, label) {
  var reg = new RegExp("^([0-9]+)?(?:\.[0-9]{0,2})?$");
  if (reg.test(value)) {
        return true;
  } else {
        alert("Please enter a valid " + label + ".");
        return false;
  }
}

function isValidTax(value, label) {
  var reg = new RegExp("^[0-9]+(?:\.[0-9]{1,4})?$");
  if (reg.test(value)) {
 	return true;
  } else {
    	alert("Please enter a valid " + label + ".");
	return false;
  }
}

function isValidAlphanumeric(value, minlength, maxlength, label) {
  var expr = "^\\w{"+minlength+","+maxlength+"}$";
  var reg = new RegExp(expr);
  if (reg.test(value)) {
 	return true;
  } else {
    	alert("The " + label + " must be between " + minlength + " and " + maxlength + " alphanumeric characters. No spaces are allowed.");
	return false;
  }
}

function isValidRequiredColor(oElement, fieldName){
    var isValid = true;
    if (Trim(oElement.value) == ""){ isValid = false; }
    if (isValid == false){
        alert(fieldName + " is required.");
        oElement.focus();
    }
    else
    {
    	var reg = new RegExp("^(#)[0-9a-fA-F]{6}$");
    	if (reg.test(oElement.value)) { return true;
  		} else {
        	alert("Please enter a valid " + fieldName + ".");
        	return false;
  		}
    }
    return isValid;
}

//--------- Utility Functions ----------/
function Trim(TRIM_VALUE){
    if(TRIM_VALUE.length < 1){
        return"";
    }
    TRIM_VALUE = RTrim(TRIM_VALUE);
    TRIM_VALUE = LTrim(TRIM_VALUE);
    if(TRIM_VALUE==""){
        return "";
    }else{
        return TRIM_VALUE;
    }
} //End Function

function RTrim(VALUE){
    var w_space = String.fromCharCode(32);
    var v_length = VALUE.length;
    var strTemp = "";
    if(v_length < 0){
        return"";
    }
    var iTemp = v_length -1;

    while(iTemp > -1){
        if(VALUE.charAt(iTemp) == w_space){
        }else{   
            strTemp = VALUE.substring(0,iTemp +1);
            break;
        }
        iTemp = iTemp-1;
    } //End While
    return strTemp;
} //End Function

function LTrim(VALUE){
    var w_space = String.fromCharCode(32);
    if(v_length < 1){
        return"";
    }
    var v_length = VALUE.length;
    var strTemp = "";

    var iTemp = 0;

    while(iTemp < v_length){
        if(VALUE.charAt(iTemp) == w_space){
        }else{
            strTemp = VALUE.substring(iTemp,v_length);
            break;
        }
        iTemp = iTemp + 1;
    } //End While
    return strTemp;
} //End Function

function isValidRequired(oElement, fieldName){
    var isValid = true;
    if (Trim(oElement.value) == ""){ isValid = false; }
    if (isValid == false){
        alert(fieldName + " is required.");
        oElement.focus();
    }
    return isValid;
}
  
function isValidRequiredSelect(oElement, fieldName){
    var isValid = true;
    if (oElement.selectedIndex == 0) isValid = false;
    if (isValid == false) {
	alert(fieldName + " is required.");
	oElement.focus();
    }
    return isValid;
}

function isSelected(oElement, fieldName) {
    if (oElement.selectedIndex==0) return false;
    else return true;
}

function jsMessage(oElement, message){
    alert(message);
    oElement.focus();
    return false;
}