// JavaScript Document
	function openWindow(URL){
		var url = URL;
		window.open(url,'Notes','width=900,height=600,screenX=50,screenY=50,resizable=yes,scrollbars=yes'); 
		return false;
	}
	
	//MANAGE DROP-DOWN 11
	function submitForm(actionUrl){
		window.document.forms[0].action = actionUrl;
		window.document.forms[0].submit();
	}
	
	function printpage() {
		window.document.getElementById("printreceipt").style.display="none";
		window.print();
	}


	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].expirationMonth.selectedIndex,document.forms[0].expirationYear.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].creditCardNumber.value, document.forms[0].cardType.value))
        {
           	return true;
        }else{
            document.forms[0].creditCardNumber.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].csv.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 quick_validate() {
	  var e = document.forms[0].elements;
      var msg = '';
        if (!e['cardType'].value)  msg += "  -Credit Card Type\n";
		if (!e['creditCardNumber'].value)  msg += "  -Credit Card Number\n";
		if (!e['expirationMonth'].value)  msg += "  -Expiration Month\n";
		if (!e['expirationYear'].value)  msg += "  -Expiration Year\n";
		if (!e['csv'].value)  msg += "  -Credit Card CSV Number\n";
		
		  if(msg)
			alert("You have not entered information\nin the following required fields:\n\n"+msg);
			
		   else{
				if(checkPaymentInfo()){
					if(validateCSVNumber()){
					if(document.forms[0].submitOrder!=null){
						document.forms[0].submitOrder.style.display = 'none';
					}
					if(document.getElementById("purchasebuttondiv")!=null){
					 	document.getElementById("purchasebuttondiv").innerHTML="<div style='color:red;font-weight:bold;margin-right:50px;'>Processing. Please Wait....</div>";
					 }
						document.forms[0].submit();							
					}else{
					alert("Please enter valid CSV Number. It can contain following \n 0-9");				
					document.forms[0].csv.focus();
					return false;
					}						
				}	
		   }
	}
	
	function validateAll(){
		return true;
	}

	function Checkout(){
		 if (document.forms[0].useragree.checked == true) {
			
			//quick_validate();
		 } 
		 else if (document.forms[0].useragree.checked == false) { 
	            alert("You may not proceed with your purchase without agreeing in user agreement - please change your selection or the information in your cart will be cancelled.");
	            return false;	    
		  } 
	}
		
	function editUser(){
		document.location.href="http://s-www.realestatecoursesonline.com/computaught/student/viewEditStudent.do?tid=07969BF023A877BF958C096CD5DC12631F1EE8D8F1ED2089CCFF1911642575A2CF33DBDBD4CB22A5&sckey=1023796";
	}