// CHECKBOX CHECK/UNCHECK ALL FUNCTIONS 

function checkAll(controllingField, formName, targetField) {
	if (controllingField.checked == true) {
		for (i = 1; i < document.forms[formName].length; i++){

			if (document.forms[formName].elements[i].name == targetField){
				document.forms[formName].elements[i].checked = true;
			}
		}		
	}else{
		for (i = 1; i < document.forms[formName].length; i++){

			if (document.forms[formName].elements[i].name == targetField){
				document.forms[formName].elements[i].checked = false;
			}
		}
	}
}

function uncheckCheckAll(controllingField, formName, targetField) {
	if (controllingField.checked == false) {
		document.forms[formName].elements[targetField].checked = false;
	} 
}
function expired( month, year ) {
            var now = new Date(); 			                             // this function is designed to be Y2K compliant.
            var expiresIn = new Date(year,month,0,0,0);                  // create an expired on date object with valid thru expiration date
            expiresIn.setMonth(expiresIn.getMonth()+1);                  // adjust the month, to first day, hour, minute & second of expired month
            if( now.getTime() < expiresIn.getTime() ) return false;
            return true;                                                                                                        // then we get the miliseconds, and do a long integer comparison
	}
	
	function mod10( cardNumber ) { // LUHN Formula for validation of credit card numbers.
			var ar = new Array( cardNumber.length );
			var i = 0,sum = 0;
		   	for( i = 0; i < cardNumber.length; ++i ) {
				ar[i] = parseInt(cardNumber.charAt(i));
		    }
		    for( i = ar.length -2; i >= 0; i-=2 ) {  // you have to start from the right, and work back.
				ar[i] *= 2;							 // every second digit starting with the right most (check digit)
				if( ar[i] > 9 ) ar[i]-=9;			 // will be doubled, and summed with the skipped digits.
		    }										 // if the double digit is > 9, ADD those individual digits together 
			for( i = 0; i < ar.length; ++i ) {
				sum += ar[i];						 // if the sum is divisible by 10 mod10 succeeds
		    }
		    return (((sum%10)==0)?true:false);	 	
	}

	function validateCard(cardNumber,CreditCardType) {
			if( cardNumber.length == 0 ) {						//most of these checks are self explanatory
				alert("Please enter a valid card number.");
				return false;				
			}
			for( var i = 0; i < cardNumber.length; ++i ) {		// make sure the number is all digits.. (by design)
				var c = cardNumber.charAt(i);
				if( c < '0' || c > '9' ) {
					alert("Please enter a valid card number. Use only digits. do not use spaces or hyphens.");
					return false;
				}
			}
		
			var length = cardNumber.length;			//perform card specific length and prefix tests
		
			if(CreditCardType=="American Express"){
				if( length != 15 ) {
						alert("Please enter a valid American Express Card number.");
						return;
					}
					var prefix = parseInt( cardNumber.substring(0,2));
					if( prefix != 34 && prefix != 37 ) {
						alert("Please enter a valid American Express Card number.");
						return;
					}
			} else if(CreditCardType=="Discover"){
					if( length != 16 ) {
						alert("Please enter a valid Discover Card number.");
						return;
					}
					var prefix = parseInt( cardNumber.substring(0,4));
					if( prefix != 6011 ) {
						alert("Please enter a valid Discover Card number.");
						return;
					}
			} else if(CreditCardType=="MasterCard"){
					if( length != 16 ) {
						alert("Please enter a valid MasterCard number."); 
						return;
					}
					var prefix = parseInt( cardNumber.substring(0,2));
					if( prefix < 51 || prefix > 55) {
						alert("Please enter a valid MasterCard Card number.");
						return;
					}
			} else if(CreditCardType=="Visa"){
				if( length != 16 && length != 13 ) {
						alert("Please enter a valid Visa Card number.");
						return;
					}
					var prefix = parseInt( cardNumber.substring(0,1));
					if( prefix != 4 ) { 
						alert("Please enter a valid Visa Card number.");
						return;
					}	
			}
			if( !mod10( cardNumber ) ) { 		// run the check digit algorithm
				alert("Sorry! this is not a valid credit card number.");
				return false;
			}
			
			//Check that the Date choosen is not the Past Date
			if(expired(document.forms[0].ccMonth.selectedIndex,document.forms[0].ccYear.value)){
				alert("You have entered an Expired Date for the Card");
				return 	false	;
			} else {
				return true;	
			}
			   
			return true; // at this point card has not been proven to be valid
			
	}
	
 	function checkPaymentInfo(){
        if(validateCard(document.forms[0].ccNumber.value, document.forms[0].ccType.value))
        {
           	return true;
        }else{
            document.forms[0].ccNumber.focus();
            return false;
        }
		return true;
 	}
 	
 	function IsNumeric(sText){
	   var ValidChars = "0123456789";
	   var IsNumber=true;
	   var Char;	 
	   for (i = 0; i < sText.length && IsNumber == true; i++){ 
	      Char = sText.charAt(i); 
	      if (ValidChars.indexOf(Char) == -1){
	         IsNumber = false;
	      }
	   }
	   return IsNumber;
   
    }
    
    function validateCSVNumber(){
	    var value = document.forms[0].ccCVN.value;	    
	    var ValidChars = "0123456789";
	  	var IsNumber=true;
	    var Char;	 
	    for (i = 0; i < value.length && IsNumber == true; i++){ 
	      Char = value.charAt(i); 
	      if (ValidChars.indexOf(Char) == -1){
	         IsNumber = false;
	      }
	    }
	    return IsNumber;	    
 	}
 	
	function submitRefund(actionURL) {
		
		if(document.getElementById("refundbuttondiv")!=null){
		 	document.getElementById("refundbuttondiv").innerHTML="<div style='color:red;font-weight:bold;margin-right:50px;'> Please Wait processing.....</div>";
		 }
		 window.document.forms[0].action = actionURL;
		 window.document.forms[0].submit();
	}	
 	
	function cancelValidation(actionURL){
		window.document.forms[0].action = actionURL;
		 window.document.forms[0].submit();		
	}
	
	function addressValidation(newStreet){
		window.document.getElementById("ship-address-street").value=newStreet;
		if(newStreet.indexOf(" ... ")>=0){
			alert("The address selected has a suggested premises range. \r\n Please review and edit the suite, apartment or building number before clicking the update.");
		}

	}
	
	function addressMultipleValidation(newStreet,newCity,newZip){
		window.document.getElementById("ship-address-street").value=newStreet;
		window.document.getElementById("ship-address-city").value=newCity;
		window.document.getElementById("ship-address-zip").value=newZip;	

	}
// END CHECKBOX CHECK/UNCHECK ALL FUNCTIONS